| Patents for E02D 29 - Underground or underwater structures; Retaining walls (15,197) |
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| 05/31/1989 | EP0317919A1 Locking device for manhole covers or other ground openings |
| 05/31/1989 | CN2038515U Auto-lock device for well cover |
| 05/30/1989 | US4834585 Landscape timber building module |
| 05/30/1989 | US4834584 Dual swiggle reinforcement system |
| 05/30/1989 | US4834574 Utility cover extension |
| 05/24/1989 | EP0317212A1 Facings for earthworks |
| 05/24/1989 | EP0317189A1 Method of aligning a base and a frame in a road surface |
| 05/24/1989 | EP0316653A2 Concrete palisade and process and apparatus for its manufacture |
| 05/24/1989 | CN2038119U Theft-proof well cover and well ring and its opening implement |
| 05/24/1989 | CN2038118U Guarding against theft well cover |
| 05/23/1989 | US4832535 Process for compaction-reinforcement-grouting or for decompaction-drainage and for construction of linear works and plane works in the soils |
| 05/18/1989 | DE3737323A1 Manhole cover impermeable to surface water and backwater |
| 05/11/1989 | DE3837243A1 Shaped block for slope protection in which plants can be grown |
| 05/11/1989 | DE3736436A1 Protective wall element |
| 05/10/1989 | CN2037377U Well cover connecting with well ring |
| 05/09/1989 | CA1253705A1 Soil retaining apparatus and blocks therefor |
| 05/09/1989 | CA1253702A1 Method of excavating a storage complex in rock for storing radioactive waste |
| 05/03/1989 | EP0314137A1 Landscape imber building module |
| 05/03/1989 | DE3736189A1 Method of producing a structure at a location where access is difficult, and formwork for such and other purposes |
| 05/03/1989 | DE3736127A1 Cover for shafts of supply and disposal systems in the ground and subsurface area |
| 05/02/1989 | US4825619 Block wall |
| 05/02/1989 | CA1253355A1 Building block with reinforcement and/or positioning lugs and recesses |
| 04/25/1989 | US4824293 Retaining wall structure |
| 04/25/1989 | US4824290 Method of constructing a rigid structure upon the bottom of a water as well as lost casing for performing said method |
| 04/25/1989 | US4824289 Sealing profile for tunnel segments |
| 04/19/1989 | EP0311886A2 Frame for building covers for ground openings |
| 04/19/1989 | EP0311884A2 Manhole cover |
| 04/13/1989 | DE3733520A1 Safety dam for the drivage of underwater tunnels in compressed air |
| 04/12/1989 | EP0310754A2 Separation device |
| 04/04/1989 | US4818150 Wall with gravity support structure, building element and method for construction thereof |
| 03/30/1989 | DE3814322A1 Damping insert with web bearing |
| 03/28/1989 | US4815897 Retaining wall system |
| 03/23/1989 | WO1989002500A1 Method of controlling the movements of a filling material |
| 03/21/1989 | CA1251332A1 Structural assembly for producing interconnected structures |
| 03/16/1989 | DE3821545A1 Manhole cover for manholes lying in traffic areas |
| 03/16/1989 | DE3729865A1 Cover for inspection shafts |
| 03/09/1989 | DE3728255A1 Ground anchor strip |
| 03/09/1989 | DE3722412A1 Open grid retaining wall of concrete blocks |
| 03/01/1989 | EP0305259A1 Process for retaining lateral walls of deep excavations |
| 03/01/1989 | EP0305258A1 Prefabricated elements for building walls and wallings, especially retaining walls |
| 03/01/1989 | EP0305245A1 Fastener for a cover on a frame |
| 02/28/1989 | US4808025 Temporary device for use during street repairs |
| 02/28/1989 | CA1250440A1 Spray ice structure |
| 02/22/1989 | CN2033018U 道路井盖 Road covers |
| 02/21/1989 | US4806045 Movable curb structure and method of providing easy access to a manhole structure |
| 02/14/1989 | US4804299 Retaining wall system |
| 02/14/1989 | US4804293 Flexible layer structure for protecting earthworks, bed walls and for delimiting embedding layers |
| 02/08/1989 | EP0202256B1 Method of construction for a covered structure |
| 02/07/1989 | US4802320 Retaining wall block |
| 01/31/1989 | US4801483 High strength, light weight structural composite and method of preparing same |
| 01/31/1989 | US4801220 Seawall, pier, or basalt column landscape |
| 01/26/1989 | WO1989000628A1 System for stabilizing structural elements |
| 01/25/1989 | EP0300829A1 Manhole cover support having enhanced grip |
| 01/17/1989 | US4798499 Stabilizing a steep erathen slope |
| 01/11/1989 | EP0188487B1 Large cross-section sunken conduit |
| 01/04/1989 | CN2030213U Theft-proof safety access of tunnel |
| 01/04/1989 | CN2030212U Manhole cover with lock |
| 01/03/1989 | CA1247871A1 Marine template retaining wall and method of construction |
| 01/03/1989 | CA1247870A1 Concrete retaining wall block |
| 12/28/1988 | EP0079887B1 Multi-purpose precast concrete panels, and methods of constructing concrete structures employing the same |
| 12/27/1988 | US4793162 Method for repairing failed waterstops and products relating to same |
| 12/22/1988 | DE3719501A1 Noise protection wall |
| 12/21/1988 | EP0296013A1 Tubular construction |
| 12/20/1988 | CA1247168A1 Apparatus for operating and transferring manhole cover |
| 12/15/1988 | WO1988009849A1 Reinforcement for continuously-cast concrete walls |
| 12/14/1988 | EP0295175A1 Hollow structure with flat base plate |
| 12/14/1988 | EP0294778A2 Protective wall-element |
| 12/13/1988 | US4790690 Stabilised earth structures |
| 12/08/1988 | DE3812077A1 Double-walled lid with concrete filling |
| 12/06/1988 | CA1245870A1 Shaped (concrete) block for retaining walls and also retaining wall |
| 11/24/1988 | DE3716270A1 Noise-insulation wall in which plants can be cultivated |
| 11/22/1988 | CA1245061A1 Seawall |
| 11/17/1988 | EP0291125A2 Collapsible casing |
| 11/17/1988 | EP0290941A1 Method for securing retaining walls |
| 11/17/1988 | DE3714664A1 Vertical sealing wall for landfill sites |
| 11/09/1988 | EP0289736A1 Manhole cover |
| 11/08/1988 | US4782640 Structural assembly for producing interconnected structures |
| 11/08/1988 | CA1244252A1 Building element for supporting grid walls with a bulk material filling |
| 11/03/1988 | DE3712852A1 Manhole neck for manholes, in particular cable manholes |
| 11/03/1988 | DE3712710A1 Noise protection wall capable of supporting plants |
| 11/02/1988 | EP0219501B1 Prefabricated support and covering structure, particularly for constructing tunnels, bridges and the like |
| 10/26/1988 | EP0287798A1 Covering for large-diameter receptacles and welding device for the production of metal sheets for such a covering |
| 10/26/1988 | CN87102683A 预制人孔 Precast manholes |
| 10/25/1988 | CA1243497A1 Retaining wall structure |
| 10/19/1988 | EP0287492A1 A prefabricated structure for the construction of bleachers and walls |
| 10/19/1988 | EP0286957A1 Vegetation-sustaining noise barrier |
| 10/18/1988 | US4778309 Stackable grid material for soil confinement |
| 10/18/1988 | US4778032 Climbing step with embedded reflection plate |
| 10/13/1988 | DE3711338A1 Manhole cover |
| 10/13/1988 | DE3709843A1 Covering for large-diameter containers |
| 10/13/1988 | DE3709822A1 Shaft neck as a connection between an underground space and the earth's surface |
| 10/12/1988 | EP0286562A2 Manhole with a T-shaped hinge |
| 10/12/1988 | EP0181866B1 Access covers for manholes |
| 10/12/1988 | CN87208633U Locking device for well lid |
| 10/11/1988 | US4776728 Angulated retaining wall |
| 10/11/1988 | US4776722 Self sealing sewer cover assembly |
| 10/11/1988 | US4776138 For enclosing telecommunications equipment underground |
| 10/05/1988 | EP0285378A1 Stackable grid material |
| 10/05/1988 | EP0284973A2 Manhole frame |
| 10/04/1988 | US4775264 Corner block unit for masonry wall structure |