| Patents for E02D 29 - Underground or underwater structures; Retaining walls (15,197) |
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| 05/28/1997 | CN2254908Y Manhole cover |
| 05/28/1997 | CN2254907Y Theft-proof structure for manhole of sewer |
| 05/28/1997 | CN2254906Y Man Hole cover for pipeline |
| 05/21/1997 | EP0774027A1 Underground passage |
| 05/21/1997 | EP0774026A1 Securing device for a grassable facing for a steep embankment and a method of putting it in place |
| 05/15/1997 | WO1997017498A1 New armatures and reinforcement system for stabilizing masses of earth |
| 05/14/1997 | EP0683838B1 A building system |
| 05/13/1997 | US5628152 Adjustable manhole cover support with shield |
| 05/07/1997 | DE19541259A1 Arrangement for establishment of dump with steep side, e.g. for dumping of household rubbish |
| 05/07/1997 | CN2253749Y Self-locking type cover for sewer manhole |
| 05/06/1997 | US5625990 Inerlocking ground covering element |
| 05/01/1997 | CA2189316A1 Liquid infiltration prevention structures and method for using same |
| 04/30/1997 | CN2253360Y Iron and Concrete mixed manhole cover |
| 04/29/1997 | US5624211 Modular block retaining wall construction and components |
| 04/29/1997 | US5623793 Permanent form for placing basement concrete wall |
| 04/24/1997 | WO1997009476A3 Bonded composite knitted structural textiles |
| 04/23/1997 | CN2252827Y Anti-theft manhole cover and its open tool |
| 04/23/1997 | CN1148122A Method for digging foundation pit |
| 04/22/1997 | US5622456 Retaining wall blocks |
| 04/22/1997 | US5622455 Earthen work with wire mesh facing |
| 04/22/1997 | CA2117565C Adjustable manhole cover |
| 04/17/1997 | WO1997013928A1 Underground chamber |
| 04/17/1997 | WO1997013686A1 Supply culvert at parking sites for airplanes at airports |
| 04/16/1997 | EP0768432A1 Drainage system and method for earth and walls using a granular material |
| 04/16/1997 | EP0767881A1 Fluid circulation pipe |
| 04/16/1997 | CN2252204Y Multi-color spraying anti-theft inspection well cover |
| 04/15/1997 | US5620283 Alignment hanger and method for building a barrier of concrete blocks |
| 04/15/1997 | US5619835 Modular block retaining wall system |
| 04/10/1997 | WO1997013040A1 Concrete product for promotion of afforestation |
| 04/10/1997 | CA2218337A1 Concrete product for promotion of afforestation |
| 04/09/1997 | EP0633967B1 Injection system for sealing joints in concrete structures |
| 04/08/1997 | US5617679 Stackable riser for on-site waste and drainage systems |
| 04/03/1997 | WO1997012096A1 Means for raising a fixed frame for manhole covers |
| 04/02/1997 | CN2250979Y Manhole cover for pipe of post and telecommunications |
| 04/02/1997 | CN2250978Y Manhole base, cover with inspection hole |
| 04/02/1997 | CN1146518A Safety theft-proof chain lock device |
| 03/26/1997 | EP0764229A1 Modular block retaining wall system and method of constructing same |
| 03/26/1997 | CN2250376Y Anti-theft manhole cover |
| 03/26/1997 | CN1034359C 地下连续墙及其施工方法 Underground continuous wall and its construction methods |
| 03/25/1997 | US5613806 Sealing system for sewer and water applications |
| 03/20/1997 | DE19533869A1 Mounting equipment for water shaft construction |
| 03/19/1997 | CN1145437A Segmental prefabricating negative pressure sealing submarine tunnel prefabricated components and construction method thereof |
| 03/18/1997 | US5611640 Method and apparatus for anchoring a utility grate cover |
| 03/13/1997 | WO1997009476A2 Bonded composite knitted structural textiles |
| 03/13/1997 | WO1997009283A1 Fly ash composites and methods for making same |
| 03/13/1997 | CA2229939A1 Bonded composite knitted structural textiles |
| 03/12/1997 | EP0761885A1 Device for locking a grating on a drainage channel |
| 03/12/1997 | EP0760885A1 Contraction joint rail |
| 03/12/1997 | EP0584298B1 Elongated housing of large cross-section and its fabrication method |
| 03/12/1997 | CN2249268Y High-density composite material manhole cover |
| 03/12/1997 | CN2249267Y Safety anti-theft cast-iron manhole cover and seat |
| 03/12/1997 | CN2249266Y Cipher anti-theft manhole cover |
| 03/12/1997 | CN1034234C Arch ring retaining structure and its construction method |
| 03/12/1997 | CN1034233C Closed arch ring retaining structure and its construction method |
| 03/11/1997 | US5608998 Panel for lining manholes and the like |
| 03/05/1997 | CN2248733Y Theft-proof cover of sewerage manhole |
| 03/05/1997 | CN2248732Y Theft-proof cover for manhole or hand-hole |
| 03/05/1997 | CN2248731Y Cover device for heat-net inspection-hole |
| 03/05/1997 | CN1144294A Paintpot cover made of stone material |
| 03/04/1997 | US5607262 Retaining wall block for use with geogrids |
| 02/27/1997 | WO1997007287A1 Adjustable manhole cover support with shield |
| 02/27/1997 | DE19530822A1 Production of support beams, support walls, abutments, ramps and subways |
| 02/27/1997 | CA2229417A1 Adjustable manhole cover support with shield |
| 02/26/1997 | EP0759488A1 Manhole piece part |
| 02/25/1997 | CA2008195C Underwater building and constructing method thereof |
| 02/19/1997 | EP0758420A1 Moulded unit, in particular of concrete, for use in landscaping and landscape gardening |
| 02/19/1997 | CN2247682Y Safety theftproof manhole cover |
| 02/19/1997 | CA2182430A1 Facing element for a stabilised earth structure |
| 02/18/1997 | CA2156312A1 Manhole cover coated with surfacing material, with retrieving plate |
| 02/13/1997 | WO1997005335A1 Wall retention system |
| 02/12/1997 | CN2247196Y Urban theft-proof drainage well cap |
| 02/12/1997 | CN1142563A Lock assembly for grating closure |
| 02/11/1997 | US5601384 Plantable retaining wall |
| 02/05/1997 | CN2246684Y 防盗窨井盖 Manhole cover theft |
| 02/04/1997 | US5598679 Cast concrete block and method of making same |
| 02/03/1997 | CA2155244A1 Manhole cover lifter |
| 01/29/1997 | EP0755760A2 Apparatus for making manholes |
| 01/29/1997 | EP0702656B1 Method for setting in operation an underground storage cavity for low temperature hydrocarbons and plant for storing low temperature hydrocarbons |
| 01/29/1997 | CN1141383A Foothold |
| 01/29/1997 | CN1141376A Foothold |
| 01/29/1997 | CN1141375A Retaining wall structure and method for constructing same |
| 01/28/1997 | US5597263 Watertight sealing system for manhole having a spill bucket |
| 01/23/1997 | DE19628658A1 Shaft manhole cover with retaining frame |
| 01/22/1997 | CN2245627Y Fibre polymer prestressed concrete manhole cover |
| 01/22/1997 | CN1140781A Shallow buried semi-precast underground railway tunnel |
| 01/21/1997 | US5595460 Modular block retaining wall system and method of constructing same |
| 01/21/1997 | US5595459 Cofferdam for 4', 8' and 12' diameter tanks |
| 01/21/1997 | US5595455 Transition collar |
| 01/21/1997 | CA2151069C Manhole adjusting extension ring section |
| 01/15/1997 | CN2245096Y Locking device for manhole well cover |
| 01/14/1997 | US5592785 Handle for subterranean concrete covers |
| 01/08/1997 | EP0752503A1 Sealing ring for gaps between multi-element constructions, in particular for underground works |
| 01/08/1997 | EP0752050A1 Method for excavating rock cavities |
| 01/02/1997 | EP0751198A1 Use of a preparation for insulation/sealing and coating purposes and method for sealing manhole covers |
| 01/02/1997 | DE19523551A1 Shaft renovation method |
| 01/02/1997 | DE19522344A1 Building component with cast mineral body |
| 12/31/1996 | US5588784 Soil or rock nail wall with outer face and method of constructing the same |
| 12/27/1996 | EP0705405B1 Pit-shaft lined with large pipes |
| 12/24/1996 | US5586841 Dual purpose modular block for construction of retaining walls |
| 12/18/1996 | CN2242913Y Anti-theft manhole cover capable of fully opening |