Pronunciation: yìnjǐng manhole cover manufacturing patent encyclopedia 1, safety anti-theft lining manhole cover.
2, security anti-theft manhole cover well ring
3, security anti-theft sewage manhole cover
4. Safety manhole cover
5. Safety manhole cover lock
6, safety lock, self-protection hinge safety anti-theft manhole cover 7, glass fiber reinforced plastic manhole cover
8, glass fiber reinforced plastic manhole cover
9. Glass fiber reinforced plastic manhole cover and its manufacturing method
10, FRP locking manhole cover
1 1, glass fiber reinforced plastic manhole cover, seat and production method thereof
12, glass fiber magnesium oxychloride cement manhole cover 13, thin safety manhole cover
14, anti-theft manhole cover is unlocked.
15, special manhole cover for colored reinforced concrete
16, color painted manhole cover
17, plug-in safety manhole cover
18, ultra-high polymer composite plastic anti-theft manhole cover
19, super heavy steel fiber reinforced concrete manhole cover
20, urban water supply and drainage manhole cover anti-theft device
2 1, urban street anti-blocking and anti-fouling rainwater manhole cover
22. Jing Zuo cast iron skeleton terrazzo manhole cover.
23. Well cover with gravity unlocking anti-theft device
24. Embedded manhole cover lock with automatic spring reset and its key
25. Ground manhole cover
26. Split manhole cover 27. Multifunctional urban sewage rainwater manhole cover
28. Multifunctional anti-theft manhole cover
29. Multifunctional manhole cover
30. Multifunctional manhole cover 2
3 1, multifunctional ductile iron manhole cover
32. Multifunctional manhole cover
33, anti-theft safety manhole cover
34, anti-theft safety manhole cover 2
35, anti-theft safety manhole cover
36, anti-theft, anti-collision noise manhole cover
37, anti-theft and anti-fall cast iron manhole cover
38. Anti-theft and anti-jump manhole cover
39. Anti-theft manhole cover and anti-theft rain gate grate
40, anti-theft manhole cover and well ring and its opening tools
4 1, anti-theft manhole cover and special opening equipment
42, anti-theft cotter manhole cover
43. Anti-theft road manhole cover 44. Anti-theft molded manhole cover
45, anti-theft lightweight manhole cover
46. Anti-theft manhole cover for water supply and drainage
47, anti-theft manhole cover
48, anti-theft manhole cover
49, anti-theft manhole cover
50, anti-theft manhole cover
5 1, reinforced concrete manhole cover and its preparation method
52, inspection well reinforced concrete manhole cover preparation method
53, simple anti-theft manhole cover
54, simple rain mouth sealing manhole cover
55, hinge conjoined anti-theft manhole cover
56, emery manhole cover and its manufacturing method
57, manhole cover fixed anti-theft device
58. Silent anti-theft cast iron Zuo Jing and manhole cover
59, polypropylene fiber concrete manhole cover manufacturing method
60, polymer concrete manhole cover
6 1, polymer-based composite manhole cover
62, polymer-based composite manhole cover mold
63. Anti-theft manhole cover
64. Anti-theft manhole cover 2
65, anti-theft manhole cover 3
66, anti-theft manhole cover 4
67, anti-theft manhole cover
68, anti-theft circular manhole cover
69. Anti-blocking and deodorizing rainwater manhole cover
70. Anti-overturning anti-theft manhole cover
7 1, waterproof, deodorizing and theft-proof sealed manhole cover
72. Anti-displacement anti-theft manhole cover
73. Making permanent manhole covers from waste garbage 74. Well covers made from fly ash and their manufacturing methods.
75, composite glass fiber reinforced plastic city pipeline manhole cover and its production process
76, composite concrete manhole cover
77. Composite manhole cover and Jing Zuo.
78. Composite manhole cover
79. Composite manhole cover
80. Composite fiber manhole cover
8 1, composite new material manhole cover and seat ring
82. Covered anti-theft waterproof manhole cover
83. Tempered glass manhole cover
84, steel wire mesh reinforced concrete manhole cover production method
85. Steel fiber composite manhole cover.
86, steel fiber composite manhole cover
87, steel fiber reinforced concrete anti-theft manhole cover
88, steel fiber reinforced concrete manhole cover
89, high strength FRP manhole cover demoulding tool
90, high strength anti-theft manhole cover
9 1, high-strength anti-theft manhole cover
92. A production method of high-strength composite pipe manhole cover.
93, high-strength composite manhole cover 94, high-strength composite manhole cover
95, water supply and drainage manhole cover, seat ring and its manufacturing process
96, water supply and drainage plastic alloy anti-theft manhole cover
97, environmental protection rubber and plastic multipurpose manhole cover
98, chemical prestressed steel fiber concrete manhole cover manufacturing method
99, concrete, cast iron integrated anti-theft underground pipeline manhole cover base
100, vibration and noise reduction pavement manhole cover
10 1, manhole cover
102, manhole cover anti-theft device
103, Jing Zuo polyethylene composite manhole cover
104, bayonet lock anti-theft manhole cover and water grate
105, compressive concrete manhole cover
106, steel fiber reinforced concrete manhole cover with shell
107, skid-mounted steel cement manhole cover
108, detachable rainwater manhole cover device
109, conjoined anti-theft manhole cover
1 10, material composition and production technology of magnesite manhole cover seat and manhole cover.
1 1 1, magnesite composite urban pipeline manhole cover and its production process.
1 12, production process of magnesite manhole cover
1 13, password anti-theft safety manhole cover and cover seat
1 14, password anti-theft manhole cover device
1 15, password lock closes the safety manhole cover.
1 16, hinged anti-theft manhole cover
1 17, cold-rolled ribbed steel fiber reinforced high-strength concrete manhole cover
1 18, artificial Shi Ying manhole cover, support and manufacturing method thereof
1 19, sewer safety manhole cover
120, transverse rib steel fiber reinforced concrete manhole cover
12 1, resin-based composite manhole cover
122, resin-based composite manhole cover 2
123, double safety manhole cover and its special opening device
124, double-frame ultra-durable FRP manhole cover
125, double lock anti-theft manhole cover
126, double-pin turnover anti-theft manhole cover
127, special reinforced concrete manhole cover
128, transformation, anti-theft, multifunctional color decorative painting environmental protection manhole cover
129, position difference type self-locking manhole cover device
130, sewage manhole cover
13 1. Preparation of inorganic glass fiber reinforced plastic and manufacturing method of pipeline manhole cover and manhole cover seat
132, manufacturing method of inorganic FRP wellhead cover
133, inorganic glass fiber reinforced plastic inspection well body
134, rubber ring for shock absorption sealing of sewer manhole cover
135, manufacturing method of fiber composite reinforced concrete manhole cover
136, fiber composite heavy manhole cover
137, fiber mortar and fiber concrete manhole cover
138, new underground pipeline manhole cover
139, new anti-theft manhole cover and its opening tool
140, new anti-theft manhole cover
14 1, new anti-theft manhole cover
142, rotary manhole cover anti-theft device
143 new anti-theft locking device for manhole cover
144, special anti-theft device for manhole cover
145, luminous fire manhole cover 146, safety manhole cover
147. Glass fiber reinforced manhole cover and rainwater grate
148, a glass fiber reinforced plastic metal frame manhole cover and well grate.
149, anti-theft manhole cover
150, anti-theft manhole cover
15 1, anti-theft manhole cover
152, anti-theft manhole cover
153, anti-theft manhole cover
154, a composite manhole cover
155. Manufacturing method of composite manhole cover
156, composite manhole cover and its preparation method
157, an improved anti-theft safety manhole cover
158, an improved anti-theft manhole cover
159, water supply and drainage manhole cover and its production process
160, an anti-theft cast iron manhole cover for pipelines.
16 1 reinforced composite manhole cover and preparation method thereof
162, hinged safety anti-theft manhole cover
163. Anti-settlement combined manhole cover
164, pressure-resistant and durable manhole cover
165, a new manhole cover
166, a new type of steel fiber high-strength concrete manhole cover with lock.
167, manhole cover and its preparation
168, self-locking anti-theft manhole cover
169, a self-locking manhole cover device
170, a self-locking manhole cover device 2
17 1. Heavy steel fiber reinforced concrete manhole cover matched with cast iron Jing Zuo.
172, manhole cover with rain mouth sealed.
173, round metal anti-theft manhole cover device
174, door reinforced concrete valve manhole cover and its Jing Zuo
175, expansion anti-theft manhole cover
176, integrally connected with the anti-theft manhole cover seat.
177, straight rod movable ball type anti-theft manhole cover
178, planting manhole cover
179, cast iron theft-proof manhole cover
180, cast iron reinforced concrete manhole cover
18 1, cast iron manhole cover, rain grate anti-theft method
182, rotary manhole cover device
183, self-locking manhole cover device
184, combined anti-theft cast iron manhole cover Jing Zuo.
185, composite steel fiber reinforced concrete manhole cover and seat