| Patents for E02F 5 - Dredgers or soil-shifting machines for special purposes (6,683) |
|---|
| 01/02/1990 | US4890719 Excavator for bucket elevator type continuous unloader |
| 01/02/1990 | US4890399 Rider type trenching machine |
| 12/28/1989 | DE3819525C1 Apparatus for making an essentially vertical soil trench |
| 12/27/1989 | CN2050046U Underwater working device for waterpower pool-digging machine set |
| 12/26/1989 | US4889391 Hand-held suction dredge and metal detector |
| 12/20/1989 | EP0346366A1 Chain digger attachment |
| 12/19/1989 | US4887372 Shallow angle furrow refurbishing method and apparatus |
| 12/19/1989 | US4887371 Dredges |
| 12/14/1989 | DE3819569A1 Excavating unit |
| 12/13/1989 | EP0346044A1 Method for automatic depth control for earth moving and grading |
| 12/13/1989 | EP0346043A1 Method for automatic depth control for earth moving and grading |
| 12/12/1989 | US4886124 Soil grading apparatus with sifting and transporting capability |
| 12/06/1989 | EP0345137A1 Earth-moving machine for operating earth-moving tools, presenting a shovel arm and provided with a quick-exchange device for the tools |
| 12/06/1989 | EP0344167A1 Corner guard system having a replaceable corner tooth |
| 12/05/1989 | US4884641 Backhoe hammer |
| 11/30/1989 | WO1989011569A1 Trench filling unit |
| 11/29/1989 | CN1037571A Method and equipment for laying underground elongated members |
| 11/28/1989 | US4883134 Milling machine for cutting trenches |
| 11/16/1989 | DE3815263A1 Process and apparatus for laying buried pipelines |
| 11/15/1989 | CN2047677U Desilting device for low-pressure water-feeding pipe |
| 11/09/1989 | DE3814775A1 Front-mounted traction jaw coupling system for tractors, with lifting/pressure system for front tyre packers, front rollers and other front-mounted implements |
| 11/08/1989 | CN1037005A Gathering and conveying device used with underwater sand-pushing ship |
| 11/08/1989 | CN1005740B Moving-type self-pushed pulverizer |
| 11/07/1989 | US4878713 Pavement planing machine |
| 11/07/1989 | US4878544 Compaction roller |
| 11/07/1989 | CA1262639A1 Padding machines |
| 11/01/1989 | CN1005639B Trench excavator |
| 10/31/1989 | US4877355 Underwater cable laying system |
| 10/25/1989 | EP0338482A1 Method and equipment for laying underground an elongated element |
| 10/24/1989 | US4875661 Method for pulling multiple runs of fiber optic cable |
| 10/19/1989 | WO1989009659A1 Screening apparatus for bulk material |
| 10/19/1989 | DE3810932A1 Mouthpiece of a suction dredger |
| 10/18/1989 | EP0337822A1 Screening apparatus for bulk material |
| 10/18/1989 | CN1036425A Underwater sand-shifting ship |
| 10/12/1989 | DE3810410A1 Soil-displacement unit |
| 10/11/1989 | CN2045760U Sludge-clearing and sand-digging device for dredging |
| 10/10/1989 | US4872977 Solid waste retriever |
| 10/10/1989 | US4872275 Ditch cleaning machine |
| 10/05/1989 | WO1989009174A1 Conveyor apparatus |
| 10/04/1989 | EP0335800A1 Vehicle for continuously gathering and loading materials |
| 10/04/1989 | EP0335111A1 Device for producing earth bore holes for laying distribution pipelines |
| 10/03/1989 | US4871281 Trenching tool for installing perforated pipe |
| 10/03/1989 | US4871213 Excavating apparatus with adjustable breaker bar |
| 10/03/1989 | US4871027 Multiple-edge sod cutter for vibratory plow |
| 09/26/1989 | US4869619 Method for excavating hole and apparatus therefor |
| 09/26/1989 | US4869294 Buried large cross-section conduit |
| 09/26/1989 | US4869002 Vehicle attachment for accommodating tool |
| 09/26/1989 | CA1260965A1 Bench mining method and apparatus |
| 09/26/1989 | CA1259791A1 Trench digging device |
| 09/20/1989 | CN2044620U Telecontrolled moving submarine excavator |
| 09/19/1989 | US4867921 Process for installing a new pipe inside an existing pipeline |
| 09/19/1989 | US4867607 Linkage apparatus having a mechanism for dampening vibrations |
| 09/19/1989 | US4867606 Tamper attachment for vibratory plow and method of laying line and cable |
| 09/19/1989 | CA1259635A1 Diluvial diving dredge |
| 09/12/1989 | US4864748 Materials transport and distribution apparatus |
| 08/31/1989 | DE3805344A1 Machine for civil engineering work, in particular for constructing trenches |
| 08/31/1989 | DE3804826A1 Integrated process and apparatus for immobilising pollutants in waste materials |
| 08/30/1989 | CN2043632U Submersible mud-cleaning machine for pools |
| 08/29/1989 | US4861461 Pipeline padding machine and method |
| 08/29/1989 | US4861195 Cable plow chute |
| 08/24/1989 | WO1989007691A1 Improvements relating to dredgers |
| 08/23/1989 | EP0329114A1 Funeral device |
| 08/22/1989 | US4859322 Device for removing material screened or filtered out of a liquid flowing in a channel |
| 08/22/1989 | US4858347 Continuous excavating apparatus and methods |
| 08/22/1989 | US4858346 Bucket cover for excavating implements |
| 08/16/1989 | EP0328198A1 Improvements relating to dredgers |
| 08/16/1989 | CN2042860U Shoveling-absorbing type underwater desilting unit |
| 08/09/1989 | EP0326679A1 Resonantly driven earth mover |
| 08/09/1989 | CN2042476U Dredger for cleaning watercourse and removing sludge |
| 08/01/1989 | US4852946 Surface working accessory and method |
| 08/01/1989 | US4852278 Method and apparatus for grading and measuring a surface having a curved profile |
| 07/26/1989 | EP0325091A1 A multipurpose amphibian vehicle |
| 07/25/1989 | US4850434 Vibrating deep ripper |
| 07/25/1989 | US4850123 Ballast removal apparatus |
| 07/25/1989 | CA1257776A1 Apparatus for impeding fine sediment deposition in harbors and navigational channels |
| 07/20/1989 | DE3800417A1 Cross-country cable laying plough for mechanically laying cables in the ground, with sand |
| 07/19/1989 | EP0324703A1 Device for boring into the soil |
| 07/19/1989 | CN2041324U Ladder-shaped ditcher attached to walking tractor |
| 07/18/1989 | CA1257615A1 Trench-digging machine |
| 07/18/1989 | CA1257515A1 Reversible percussive action machine |
| 07/12/1989 | EP0231252B1 Device for displacing material |
| 07/11/1989 | CA1257089A1 Self-tripping rippers |
| 07/05/1989 | EP0322935A1 Process and device for depositing loose material under water, in particular covering a pipe or the like |
| 07/05/1989 | CN2040510U Panel turnover type scraper box mud cleaning machine |
| 07/04/1989 | US4844658 Apparatus for burying pipe under water |
| 07/04/1989 | US4844549 Milling machine for digging trenches in the earth |
| 07/04/1989 | US4843742 Trenching apparatus and methods of forming inground retaining walls |
| 06/22/1989 | DE3742198A1 Pulshydraulik-antriebssystem Pulse hydraulic drive system |
| 06/20/1989 | US4840729 Oil spill recovery apparatus |
| 06/20/1989 | CA1256129A1 Railroad mounted trench digger |
| 06/15/1989 | WO1989005408A1 Pulsating hydraulic drive system |
| 06/13/1989 | US4838734 Method and device for forming a fluid permeation control layer of the ground |
| 06/07/1989 | EP0319115A1 Improved tortional limiting device for a vehicular ditching apparatus |
| 06/07/1989 | EP0201517B1 Method for breaking down ooze in a harbour basin |
| 06/06/1989 | US4836503 Method for pulling fiber optic cable through a conduit |
| 06/06/1989 | US4836294 Machine for digging a putting cup hole |
| 06/06/1989 | CA1255144A1 Variable length link for a three-point hitch |
| 06/06/1989 | CA1255111A1 Trenching method and apparatus |
| 06/01/1989 | WO1989004910A1 Control system for a multiple shank impact ripper |
| 05/30/1989 | US4834581 Root cutting cable laying plow |