| Patents for E02D 29 - Underground or underwater structures; Retaining walls (15,197) |
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| 03/12/1991 | US4998387 Cover assembly for a ground opening |
| 03/07/1991 | WO1991002851A2 Cellular structures for sustaining walls |
| 03/07/1991 | DE3929530A1 Casing for vertical shaft in refuse dump - comprises vertical series of polyethylene cylinders arranged to successively overlap at edges leaving gap filled with grit round shaft |
| 03/06/1991 | EP0414991A1 Sealing strip for the sealing of joints of vault or tunnel cladding elements |
| 03/06/1991 | EP0414687A1 Stop-cock cover and extension ring therefor |
| 03/06/1991 | CN2072545U Thin safety inspection well cover |
| 03/05/1991 | US4997602 Cast-in-place manhole liner method |
| 03/05/1991 | US4997316 Method and apparatus for constructing a retaining wall |
| 03/05/1991 | US4997315 Crib walls |
| 02/26/1991 | US4995757 Manhole cover annular support for repaved street |
| 02/26/1991 | US4995584 Cast-in-place manhole liner apparatus |
| 02/26/1991 | CA1280613C Wooden landscaping structures |
| 02/19/1991 | US4993879 Connector for securing soil reinforcing elements to retaining wall panels |
| 02/19/1991 | US4993722 Apparatus and method for improved pipe to manhole sealing |
| 02/19/1991 | US4993206 Interlocking building units and walls constructed thereby |
| 02/13/1991 | EP0412955A2 Slope modules and wall or slope structures made with these modules |
| 02/12/1991 | US4992005 Lifting device and method for retaining wall panels |
| 02/12/1991 | US4992003 Unit comprising mesh combined with geotextile |
| 02/07/1991 | WO1991001412A1 Duct cover |
| 02/07/1991 | WO1990015903A3 Pre-cast, reinforced concrete retaining wall system |
| 02/06/1991 | EP0240493B1 Method for compaction-trussing-injection or decompaction-draining and construction of linear works or planar works in grounds |
| 02/06/1991 | CN2070774U Anti-theft safety cipher well cover and cover holder |
| 02/05/1991 | US4990390 Fiber bundles in resin |
| 02/05/1991 | US4990210 Apparatus for introducing and joining diaphragms in slotted walls |
| 02/05/1991 | US4990032 Retaining wall module with asymmetrical anchor |
| 01/30/1991 | EP0410550A1 Under-surface construction in snow or ice |
| 01/30/1991 | CN2070321U Automatic valve for road sewer pipe |
| 01/29/1991 | CA1279741C Grouting composition |
| 01/23/1991 | EP0408923A1 Upper part for inspection chambers and gullies |
| 01/23/1991 | CN2069884U Safety road manhole cover |
| 01/19/1991 | CA2020702A1 Apparatus and method for reinforcing a concrete block wall |
| 01/16/1991 | CN2069436U Sewage water inspection well made of glassfiber reinforced plastics |
| 01/12/1991 | WO1991000942A1 Manhole cover |
| 01/12/1991 | CA2035884A1 Manhole cover |
| 01/10/1991 | DE3921394A1 Shaft construction system |
| 01/10/1991 | DE3920514A1 Concrete prefabricated slope block - has coarse-mesh plastics anchoring grille grouted into rear wall |
| 01/10/1991 | DE3920327A1 Adjustable-height hydrant cover in road - has central tapped hole in cross-member supporting jacking spindle top end |
| 01/09/1991 | EP0406653A2 Facing wall |
| 01/09/1991 | CN2068979U Theft-guarding covers for inspection manholes |
| 01/08/1991 | US4983076 Facings for earthworks |
| 01/08/1991 | US4982653 Method and apparatus for ventilating an enclosure accessed by a manhole |
| 01/08/1991 | US4982550 Joining of a concrete element to a support |
| 01/08/1991 | US4982544 Module and method for constructing sealing load-bearing retaining wall |
| 01/05/1991 | CA2020422A1 Plantable sight wall |
| 01/03/1991 | DE4013732A1 Device for supporting manhole covers whilst road surface is built up - consists of frame with three telescopic arms, length adjustable to fit edge of manhole |
| 01/02/1991 | EP0405520A1 Method of making shafts |
| 01/02/1991 | CA1278451C Sealing arrangement for manhole cover |
| 12/27/1990 | WO1990015903A2 Pre-cast, reinforced concrete retaining wall system |
| 12/20/1990 | DE3918919A1 Construction of wide underground channel - by excavating three parallel trenches and lining them with concrete |
| 12/19/1990 | EP0402391A1 Access covers for manholes. |
| 12/19/1990 | CN2067726U 压轴式井盖 Finale style covers |
| 12/13/1990 | WO1990015223A1 Submerged bridge tunnel |
| 12/13/1990 | WO1990015195A1 Moulded (concrete) block for supporting walls, mould for its production, and supporting wall |
| 12/11/1990 | US4976568 Device for raising level of manhole cover |
| 12/06/1990 | DE3917500A1 (beton-) formstein fuer stuetzmauern, form fuer die herstellung sowie stuetzmauer (Concrete) shaped stone for retaining walls, retaining wall and form for the production |
| 12/06/1990 | DE3917357A1 Embankments and flood dams - prepd. from rammed posts and rock filled netting based on plastic material |
| 11/28/1990 | EP0399941A1 Improved building module |
| 11/27/1990 | US4973191 Manhole cover |
| 11/20/1990 | US4971149 Flush mount monitoring well cover |
| 11/13/1990 | US4969771 Manhole cover support having enhanced grip |
| 11/13/1990 | US4969770 Manhole cover support with topside flange |
| 11/06/1990 | US4968186 Mechanically stabilized earth system and method of making same |
| 11/06/1990 | CA1276006C Apparatus for operating manhole cover |
| 11/06/1990 | CA1275813C Large diameter burried pipe |
| 11/01/1990 | WO1990012927A1 A wall |
| 10/31/1990 | EP0395534A1 Building construction |
| 10/30/1990 | US4966489 Manhole cover support having interbraced top members |
| 10/25/1990 | DE3913335A1 Mauer Wall |
| 10/25/1990 | DE3913291A1 Shaft cover levelling with road surface - involves distance rings between cover flange and shaft ring shoulder |
| 10/25/1990 | DE3912325A1 Shaft cover levelling ring - comprises supporting surfaces joined by adjusting mechanism at three points |
| 10/24/1990 | EP0393094A1 Telescopic well or column pipe. |
| 10/24/1990 | EP0393032A1 Reinforcement for continuously-cast concrete walls |
| 10/24/1990 | CN2064377U Well cover locking device |
| 10/24/1990 | CN2064376U Underground conduit trench well cover guarding against theft |
| 10/23/1990 | US4964761 Retaining wall adapted to be provided with vegetation, comprising openings serving as a concealed framing for concrete |
| 10/23/1990 | US4964755 Manhole cover lock apparatus |
| 10/18/1990 | WO1990012160A1 Improvements relating to building and shoring blocks |
| 10/16/1990 | US4963053 Multicomponent wales and bases for manhole cover supports |
| 10/16/1990 | CA1275177C Equipment for carrying out work, under dry conditions, on an underwater structure |
| 10/10/1990 | EP0391857A1 Process for placing a vegetation-supporting layer on a slope or a wall |
| 10/10/1990 | EP0391827A1 Action box of a manhole cover |
| 10/10/1990 | EP0391826A1 Hinged manhole cover |
| 10/10/1990 | EP0391825A1 Manhole cover providing open position bolting |
| 10/10/1990 | EP0391736A2 Underwater wall construction |
| 10/09/1990 | US4961673 Retaining wall construction and method for construction of such a retaining wall |
| 10/03/1990 | EP0390767A2 Airtight manhole closure device |
| 10/03/1990 | EP0389880A2 Sedimentation reservoir, especially for waste water |
| 10/02/1990 | US4960349 Woven geotextile grid |
| 09/26/1990 | CN1009746B Metal strip for use in stabilised earth structures |
| 09/20/1990 | DE4007990A1 Wooden component for soundproof wall - has protruding and recessed coupling portions at edges and vertical passage |
| 09/19/1990 | EP0388399A2 Facing wall consisting of stacked logs or blocks |
| 09/19/1990 | EP0238548B1 Retaining wall system using soil arching |
| 09/19/1990 | CN2062348U Road well lid safety lock |
| 09/19/1990 | CN1045438A Reinforced concrete cover of inspection well and manufacturing method thereof |
| 09/18/1990 | US4957395 Pre-cast, reinforced concrete retaining wall system |
| 09/18/1990 | US4957389 Method and apparatus for sealing manholes |
| 09/12/1990 | EP0386696A1 Heavy duty floor gully |
| 09/11/1990 | US4955752 Cover assembly with a locking mechanism |
| 09/07/1990 | CA2011529A1 Tunnel construction |
| 09/05/1990 | EP0385067A2 Wall with gravity support structure, building element and method for construction thereof |