| Patents for E02D 29 - Underground or underwater structures; Retaining walls (15,197) |
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| 09/25/1991 | EP0447761A1 Rectangular manhole cover |
| 09/24/1991 | US5051022 Manhole cover support with topside flange and inclined seat |
| 09/24/1991 | CA1289400C Manhole cover support having enhanced grip |
| 09/19/1991 | DE4103330A1 Ground pressure resisting structural kit - comprises perforated horizontal bars, holding vertical reinforcing rods in position |
| 09/17/1991 | US5049004 Underwater building and constructing method thereof |
| 09/11/1991 | EP0445712A1 Underground circular or variable radius parking place |
| 09/11/1991 | CN2084480U Self locking inspecting well lid |
| 09/10/1991 | US5046910 Main body structure for underground parking lot and underground parking lot using the structure |
| 09/10/1991 | US5046898 Retaining wall and building block therefor |
| 09/10/1991 | US5046886 Universal stackable manhole shield |
| 09/05/1991 | DE4006321A1 Safety device for cellar gratings - fits over shaft wall fixture fillet with two fixing components |
| 09/04/1991 | EP0444388A1 Structure to contain natural and/or artificial embankments |
| 09/03/1991 | US5044835 Expansion joint for use in constructing concrete structures |
| 09/03/1991 | US5044834 Retaining wall construction and blocks therefor |
| 09/03/1991 | US5044833 Reinforced soil retaining wall and connector therefor |
| 09/03/1991 | US5044818 Adjustable manhole cover assembly |
| 08/28/1991 | EP0443608A1 Appliance for preventing water from leaking through joint |
| 08/27/1991 | US5042359 Projectile accelerating device |
| 08/21/1991 | EP0442840A1 Apparatus for constructing manholes |
| 08/20/1991 | US5040928 Facings for earthworks |
| 08/20/1991 | US5040921 Segmented tunnel system |
| 08/20/1991 | CA1287724C Modular building system for wide section covered structure, and related construction process |
| 08/14/1991 | EP0441083A1 Prefabricated concrete monobloc elements for the construction of retaining walls |
| 08/13/1991 | US5039263 Cover with integral fastening means |
| 08/13/1991 | US5039248 Support for catch basin cover |
| 08/10/1991 | CA2035769A1 Prefabricated concrete blocks for building retaining walls |
| 08/07/1991 | EP0393094B1 Telescopic well or column pipe |
| 08/06/1991 | US5037243 Anchor for a retaining wall dead man |
| 08/06/1991 | CA1287247C Adjustable manhole top |
| 08/01/1991 | DE4013806C1 Open tunnel construction - comprises longitudinal corrugated profiled sections with sheet walling and roofing sections |
| 07/30/1991 | US5035532 Method and apparatus for constructing an articulated pavement system |
| 07/25/1991 | DE4001278A1 Additional U-profile clamps engaging plastic sealing strips - which span expansion seams in base structure for special waste tip |
| 07/25/1991 | DE4001277A1 Building expansion joint seal - has round bars in pairs clamped against strip edge by clamping members |
| 07/24/1991 | CN2081401U High-adjustable anti-stealing checking well cover |
| 07/23/1991 | US5033912 Earth stabilization |
| 07/18/1991 | DE4000965A1 Underground container with inspection shaft - has top recess for frame for cover allowing height adjustment |
| 07/17/1991 | EP0281625B1 Wall and block therefor |
| 07/17/1991 | CA2173879A1 Inclined adjustment ring for manhole cover |
| 07/16/1991 | US5032197 Cast-in-place manhole liner method |
| 07/16/1991 | US5031376 Retaining wall construction and blocks therefore |
| 07/16/1991 | CA1286123C Structural assembly for producing walls |
| 07/11/1991 | DE4104045A1 Earth embankment retaining wall - is constructed from alternate layers of anchor elements and compacted soil |
| 07/10/1991 | EP0436412A1 Method of rehabilitating manholes by custom lining/relining |
| 07/09/1991 | US5030035 Earth retaining system |
| 07/09/1991 | US5030030 Pad for supporting a utility access conduit and method for installing same |
| 07/02/1991 | US5028172 Retaining wall structure |
| 07/02/1991 | CA1285501C Method and apparatus for lining manhole assemblies and the like |
| 06/30/1991 | CA2033288A1 Facing system |
| 06/25/1991 | CA1285167C Ringlike device for raising the circular cover of a street manhole |
| 06/19/1991 | CN2079200U Theft-proof safety well cover |
| 06/13/1991 | WO1991008350A1 Cast-in-place manhole liner apparatus and method |
| 06/13/1991 | WO1991008349A1 Retaining wall |
| 06/12/1991 | EP0431271A1 Method for manufacture of a shaftcover |
| 06/12/1991 | CN2078766U L-shape cover seat |
| 06/12/1991 | CN1052161A Wall plate and assemblage for dry construction and incline wall made of them thereof |
| 06/11/1991 | US5022202 Withstanding high exterior pressure |
| 06/11/1991 | CA1284727C Interfacial separator for concrete structures |
| 06/05/1991 | EP0430890A1 Wall element for dry construction of walls, building system for securing slopes and slope wall built with the building system |
| 06/05/1991 | EP0430071A1 Corrosion resistant structure for soil reinforcement |
| 06/05/1991 | CN2078343U Cast iron reinforced concrete well cover |
| 06/04/1991 | US5021261 Expandable body; flexible, compressible retention component |
| 05/31/1991 | CA2031077A1 Wall element for the dry construction of walls |
| 05/29/1991 | EP0429379A1 Retaining structure and method of construction of a retaining structure |
| 05/29/1991 | EP0429273A1 Lining of landfill sites |
| 05/25/1991 | CA2030642A1 Corrosion resistant structure for soil reinforcement |
| 05/23/1991 | DE3546728C2 Walling equipment for enclosing sloping ground |
| 05/22/1991 | EP0427911A1 Cast iron and concrete circular manhole cover with ventilation slots |
| 05/22/1991 | EP0419580A4 Cast-in-place manhole liner apparatus and method |
| 05/21/1991 | US5017313 Method and means for repairing existing manhole |
| 05/21/1991 | US5017050 Building element for supportive grid walls with a bulk material filling |
| 05/21/1991 | US5017049 Composite masonry block |
| 05/21/1991 | US5017039 Covering for a ground opening |
| 05/15/1991 | EP0427467A1 Improvements in or relating to ground surface access assemblies |
| 05/15/1991 | EP0427221A1 A prefabricated constructional article with vegetation support, in particular for face walls or retaining walls |
| 05/08/1991 | EP0393032A4 Reinforcement for continuously-cast concrete walls |
| 05/08/1991 | EP0171417B1 Structural module for retaining walls and the like |
| 05/08/1991 | DE3936957A1 Sound barrier for motorways - is made up of revetment wall of coffers with sides and linking ends made of wire mesh mats |
| 05/02/1991 | WO1991002851A3 Cellular structures for sustaining walls |
| 05/02/1991 | DE3935686A1 Concrete beam for building wall - is used for shutting out noise and has recesses in upper surface to collect rainwater |
| 05/01/1991 | CN1012517B Method for building side dike of self-flow ash embankment with powder coal |
| 04/30/1991 | US5011331 Method and structural elements for construction underground garages |
| 04/30/1991 | US5010707 Retaining wall block module |
| 04/23/1991 | CA1283299C Covering structure intended for laying over a line or the like deposited on the seafloor |
| 04/11/1991 | DE3932493A1 Construction steep embankment covered with plants - uses base elements with surface strip between bottom and ground surfaces |
| 04/04/1991 | DE3931583A1 Duct cover or cable or supply line ducting - has sealing and damping strips secured by incorporated fixing bolts |
| 04/03/1991 | EP0420778A1 Apparatus for capping a manhole |
| 04/03/1991 | EP0420777A1 Manhole cover with locked hinge |
| 04/03/1991 | EP0419580A1 Cast-in-place manhole liner apparatus and method |
| 04/02/1991 | US5004376 Facing system |
| 03/28/1991 | DE3931316A1 Supporting wall construction for banks - uses small individual prefab. sections bolted together |
| 03/27/1991 | EP0418699A1 Sealing apparatus for concrete joints and procedure for its filling |
| 03/27/1991 | EP0418531A1 Injection tube for joint sealing for concrete constructions |
| 03/27/1991 | EP0245407B1 Casing for constructing a rigid structure upon the bottom of a body of water as well as a method of constructing a rigid structure upon the bottom of a body of water |
| 03/27/1991 | CN2073900U 防盗井盖 Security covers |
| 03/26/1991 | US5002438 Method of rehabilitating manholes by custom lining/relining |
| 03/26/1991 | US5002436 Soil reinforcement system with adjustable connection system for connecting precast facing panels and soil nails |
| 03/26/1991 | US5002434 Method and apparatus for placing a hollow column in the hard bottom of a body of water in particular in a rock bottom |
| 03/26/1991 | CA2025689A1 Cover assembly for a ground opening |
| 03/26/1991 | CA1281890C2 Molding apparatus |
| 03/12/1991 | US4998397 Alignment and lateral support member for use in laying common concrete blocks |