| Patents for E02D 29 - Underground or underwater structures; Retaining walls (15,197) |
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| 05/13/1992 | CN2104244U Plastic clamp strap |
| 05/12/1992 | CA1300416C Ground water drain |
| 05/02/1992 | CA2029150A1 Manway lift assist |
| 04/30/1992 | WO1992007144A1 Process for building structural works comprising an arch and prefabricated parts for carrying out said process |
| 04/28/1992 | US5108232 Structure to contain natural and/or artificial embankments |
| 04/28/1992 | US5108231 Embankment block |
| 04/28/1992 | US5107652 Construction module |
| 04/23/1992 | DE4032966A1 Side slope stabilisation - uses upright steel lattice with connected top and bottom geo-textile mats |
| 04/22/1992 | EP0481938A2 A modular frame for defining and profiling the edges of wells, canalizations for openings in general |
| 04/22/1992 | EP0481937A1 A modular construction joist made up of a high-strength plastic material, particularly suitable for realizing grids, and closure members subjected to pedestrian and vehicle traffic |
| 04/22/1992 | EP0481906A1 Manhole cover and manhole comprising said cover |
| 04/22/1992 | EP0377628B1 Method of controlling the movements of a filling material |
| 04/22/1992 | CN2102311U Detection well lid with locking device |
| 04/21/1992 | CA1298982C Retaining wall construction and blocks therefore |
| 04/16/1992 | WO1992006245A1 A method for building a road bed and the use of the same |
| 04/16/1992 | WO1992005932A1 Method and means for repairing existing manhole |
| 04/16/1992 | CA2052111A1 Manhole cover, manhole using same and lock ring therefor |
| 04/15/1992 | EP0480890A1 A reinforced soil vegetative wall and method for realizing the same |
| 04/15/1992 | CN2101690U Well cover with theft-proof lock |
| 04/08/1992 | EP0478733A1 Vertically adjustable manhole cover |
| 04/07/1992 | US5102260 Geoinclusion method and composite |
| 04/02/1992 | WO1992005325A1 Landscaping block |
| 04/02/1992 | WO1992005318A1 Construction and process for producing the same, associated construction elements and sets of construction elements |
| 03/31/1992 | US5100257 Manhole covers with attachment means for decorative strips |
| 03/31/1992 | CA1298122C Access covers for manholes |
| 03/25/1992 | CN2099777U Hinge type safety theft-proof well cover |
| 03/18/1992 | EP0475225A1 Covering element |
| 03/18/1992 | CN2099144U Manhole cover guarding against theft |
| 03/18/1992 | CN2099143U Manhole cover guarding against theft |
| 03/17/1992 | US5095667 Telescopic manhole and storm drain installation |
| 03/14/1992 | CA2051348A1 Mortarless retaining wall |
| 03/11/1992 | EP0474503A1 Torque rod counterbalanced door assembly |
| 03/11/1992 | CN2098519U Anti-theft gully cover and seat connected integrally |
| 03/05/1992 | DE4128067A1 Rectangular access shaft cover - has collar on bottom frame engaging in top one during height adjustment |
| 03/05/1992 | DE4128036A1 Shaft frame for rectangular inner cover - is adjustable for length along one short side |
| 03/05/1992 | DE4027863A1 Ring inserted under access shaft cover - has extension strips hinging elastically on outer periphery of main part |
| 03/04/1992 | EP0472993A1 Hollow block for a retaining wall |
| 03/04/1992 | EP0472792A1 Improvements relating to building |
| 03/03/1992 | US5093055 Process for sealing a cover over a vault |
| 02/26/1992 | CN2097224U Well cover capable of preventing theft and jump |
| 02/25/1992 | US5091247 Woven geotextile grid |
| 02/25/1992 | US5090713 Elastomeric gasket for sealing a glass fiber reinforced cover to a vault |
| 02/25/1992 | CA1296193C Retained earth structure and method of making same |
| 02/21/1992 | CA2049218A1 Block particularly for building loose-laid retaining walls |
| 02/20/1992 | WO1992002692A1 Method for building an underground construction, particularly a vehicle park, while leaving in place obstacles such as trees |
| 02/19/1992 | EP0471104A1 Lining element for a formed body of inherent stability |
| 02/19/1992 | CN2096581U Lock-controlled anti-theft well cover |
| 02/18/1992 | CA2023581A1 Lenson panel-stapled gabions and panel-stapled erosion mattresses |
| 02/12/1992 | CN2095883U Anti-theft well lid |
| 02/04/1992 | CA1295137C Stackable grid material for soil confinement |
| 01/31/1992 | CA2022197A1 Natural acoustical screen on composite wall |
| 01/22/1992 | EP0466726A1 Improvements relating to building and shoring blocks. |
| 01/22/1992 | CN2093865U Theft-proof manhole cover installations |
| 01/21/1992 | US5082392 Manhole cover lock with spring biased locking bars |
| 01/21/1992 | US5081802 Method and apparatus for lining manhole assemblies and the like |
| 01/21/1992 | CA1294475C Locking device for the positive holding of a cover or grate in a frame |
| 01/15/1992 | EP0185041B1 Retainer works with structure of thin, double curvature elements |
| 01/09/1992 | WO1992000426A1 Manhole cover |
| 01/08/1992 | CN2092561U Multifunction well cover |
| 01/07/1992 | US5078539 Bendable raising structure for manhole cover with predetermined weak spot |
| 01/07/1992 | CA1293868C Construction blocks and a method of making same |
| 12/31/1991 | US5076735 Welded wire component gabions and method of making the same and construction soil reinforced retaining walls therefrom |
| 12/17/1991 | US5072566 Landscaping block |
| 12/12/1991 | WO1991019057A1 Improvements in embankment reinforcing structures |
| 12/11/1991 | EP0460891A2 Reinforced earth blast resistant structures and method of construction thereof |
| 12/11/1991 | CN2090393U All safety cover for manhole |
| 12/10/1991 | US5071177 Locking device for the positive holding of a cover or grate in a frame |
| 12/04/1991 | EP0459150A2 Securing device for a covering |
| 11/26/1991 | CA1292363C Method for retaining the sidewalls of deep excavations |
| 11/21/1991 | DE4015953A1 Reinforced concrete manhole cover - has reinforcement in form of frame supported by welded on legs |
| 11/20/1991 | CN2089025U Safety well cover |
| 11/19/1991 | US5066169 Retaining wall system |
| 11/13/1991 | CN2088565U Theft-proof safety well-lid |
| 11/12/1991 | US5064313 Embankment reinforcing structures |
| 11/08/1991 | CA2016306A1 Process for the lagging of walls and ceilings in rock spaces and system for use in such lagging |
| 11/07/1991 | DE4113752A1 Mould producing hollow concrete cylinder - has plate which remains in place after concrete has hardened |
| 11/05/1991 | US5062735 Self sealing domed sewer cover assembly |
| 10/31/1991 | WO1991016505A1 Manhole inserts |
| 10/31/1991 | WO1991016504A1 Vertically adjustable manhole cover |
| 10/30/1991 | EP0454098A2 Process for making the bottom piece of a shaft and apparatus for carrying out the process |
| 10/30/1991 | CN2087634U Safety cover for underground pipeline overhaul pit |
| 10/23/1991 | EP0452744A1 Plant accommodating noise protection wall |
| 10/23/1991 | EP0383884B1 Clamping ring |
| 10/22/1991 | CA1290949C Retaining wall system |
| 10/17/1991 | WO1991015634A1 A method for renovating wells |
| 10/17/1991 | WO1991015345A1 Waterproof and corrosion resistant concrete articles and process of preparing the same |
| 10/17/1991 | DE4011736A1 Shaft construction system |
| 10/16/1991 | CN2086764U Anti-theft well cover and its opener |
| 10/15/1991 | US5056961 Method of constructing walls from discarded tires |
| 10/15/1991 | US5056955 Locking device for coverings for manholes and other ground openings |
| 10/15/1991 | US5056282 Injection hose for joints to be sealed in concrete works |
| 10/09/1991 | EP0451064A1 Manhole road covering with hinged lid, damping joint and overturning closure |
| 10/09/1991 | CN2086274U Safety well cover |
| 10/09/1991 | CN1055137A Prodn. of reinforced-concrete cover plate for inspection well |
| 10/08/1991 | US5054956 Conduit hole cover |
| 10/03/1991 | WO1991014833A1 Retaining wall and elements for use therein |
| 10/01/1991 | US5052851 Emergency maintenance hole cover, and method of installation |
| 10/01/1991 | CA1289800C Manhole cover with hinge |
| 10/01/1991 | CA1289799C Manhole with floating head |
| 10/01/1991 | CA1289769C Apparatus for reinforcing a concrete block wall |