| Patents for E02F 5 - Dredgers or soil-shifting machines for special purposes (6,683) |
|---|
| 08/23/1988 | US4765072 In a digging boom assembly |
| 08/17/1988 | EP0278705A1 Improved submarine cable plough |
| 08/17/1988 | EP0278335A2 Method and device for removing mud from a harbour basin or such |
| 08/11/1988 | WO1988005848A1 Chain digger attachment |
| 08/10/1988 | EP0277326A2 Road working apparatus |
| 08/09/1988 | US4762184 Digging point assembly |
| 08/09/1988 | CA1240160A1 Method and device for insulation of the ground |
| 08/02/1988 | US4761038 Surface working accessory |
| 08/02/1988 | US4760656 Placer mining apparatus with puddling nozzle |
| 07/26/1988 | US4759412 Rock breaking device |
| 07/26/1988 | US4759138 Plow steering system |
| 07/20/1988 | CN87211913U Dry-land ditching machine |
| 07/19/1988 | US4758355 Oil spill recovery method |
| 07/19/1988 | US4758116 Multi-blade ditching machine |
| 07/19/1988 | US4758115 Pipeline, a method of laying the pipeline and a device for effecting said method |
| 07/19/1988 | US4757976 Apparatus for pulling multiple runs of fiber optic cable |
| 07/19/1988 | US4757622 Portable power shovel |
| 07/12/1988 | CA1239025A1 Method and equipment for automatic guidance of earthmoving machines and especially machines for laying drainage elements |
| 07/05/1988 | US4755004 Rotary rocksaw device |
| 07/05/1988 | US4755001 Excavating machine |
| 07/05/1988 | CA1238928A1 Rock ditcher |
| 06/28/1988 | CA1238494A1 Method of operating a ground engaging implement |
| 06/16/1988 | DE3641657A1 Self-propelled backfilling device having a backfilling member |
| 06/15/1988 | CN86108042A Swing anti-impact dredger with multiple grab buckets |
| 06/15/1988 | CN85103251B Apparatus for lifting drag arm of drag suction type dredger |
| 06/14/1988 | US4750566 Resilient connecting means for lifting vibratory device |
| 06/14/1988 | US4750280 Trench-digging machine |
| 06/14/1988 | CA1237902A1 Under ice pipelay |
| 06/09/1988 | DE3640421A1 Apparatus for excavating earth material adjacent to water |
| 06/07/1988 | US4749308 Self-propelled underwater cable burying machine |
| 06/07/1988 | US4749048 Ripper attachment for skid steer loaders |
| 06/01/1988 | EP0269172A2 Rotary rock and trench-cutting saw |
| 06/01/1988 | CN87210116U Mandatory multifunction cleaner |
| 05/26/1988 | DE3638998A1 Apparatus for picking up mineral deposits from the sea bed |
| 05/25/1988 | EP0268334A2 Rotary rock and trench-cutting saw |
| 05/19/1988 | WO1988003584A1 Control system for an impact ripper |
| 05/18/1988 | EP0267815A1 Method and apparatus for draining the edges of all stabilized surfaces in civil engineering, or the edges of a construction |
| 05/17/1988 | US4744425 Apparatus for excavating a substantially vertical slot |
| 05/11/1988 | CN87201132U Shovel-style dredger |
| 05/10/1988 | US4742627 Digging boom assembly |
| 05/05/1988 | WO1988003197A1 Cutting device |
| 05/03/1988 | US4741646 For laying a conduit within a trench |
| 04/27/1988 | EP0264392A1 Apparatus for laying subterranean plastic tape and pipe. |
| 04/27/1988 | CN87201351U Movable hydraulic clay digger |
| 04/13/1988 | EP0263762A1 Excavating device for digging trenches into the ground |
| 04/13/1988 | EP0263727A1 Device for digging trenches |
| 04/12/1988 | US4736534 Ditcher method and apparatus |
| 04/12/1988 | US4736532 Excavation apparatus |
| 04/12/1988 | CA1235151A1 Rotary rock and trench cutting saw |
| 04/12/1988 | CA1234975A1 Machine for cutting off or planing off road surfaces |
| 04/07/1988 | DE3632559A1 Apparatus for the suction removal of material from the bottom of rivers, canals and other stretches of water |
| 04/05/1988 | US4735234 Buried large cross-section conduit |
| 03/30/1988 | EP0262050A1 Digging device for earthmovingmachine used for digging trenches into the ground |
| 03/30/1988 | EP0164366B1 A material working machine |
| 03/30/1988 | CN87106043A Moving-type self-pushed pulverizer |
| 03/29/1988 | US4733731 Air-operated reversible percussive action machine |
| 03/24/1988 | DE3631543A1 Machine for filling earth trenches |
| 03/22/1988 | US4732227 Equipment for continuous hole drilling in soil |
| 03/17/1988 | DE3644945A1 Bucket wheel excavator |
| 03/16/1988 | EP0259472A1 Dredger. |
| 03/15/1988 | CA1234010A1 Vibrating earth ripping apparatus |
| 03/09/1988 | EP0258507A1 Digging point assembly |
| 03/08/1988 | US4729435 Subsoil tilling implement |
| 03/02/1988 | EP0258122A1 Wheel excavating device for digging trenches in the ground |
| 03/02/1988 | EP0257317A1 Device for the treatment of floors of stretches of water |
| 03/02/1988 | EP0257271A1 Device for implements mounted on earth-moving machines, in particular for tracked ones |
| 03/02/1988 | EP0257191A2 Method for installing highway drainage mat |
| 03/02/1988 | CN87104708A Improved trenching apparatus and methods of forming inground retaining walls |
| 02/18/1988 | DE3626618A1 Apparatus for handling the beds of bodies of water |
| 02/17/1988 | CN87100584A Insitu hazardous waste treating apparatus and method of using same |
| 01/28/1988 | EP0201503A4 Casting of structural walls. |
| 01/26/1988 | US4721409 Method and device for progressively producing an underwater laying-out channel |
| 01/26/1988 | US4720929 Trenching device |
| 01/21/1988 | DE3624056A1 Bucket-wheel excavator |
| 01/20/1988 | EP0253726A1 Motoric device for digging trenches in the soil with the aid of rotary cutters |
| 01/20/1988 | EP0252906A1 A vessel for laying of flexible tubes deeply into the bottom sediment of shallow lakes and similar waters |
| 01/13/1988 | EP0252419A2 Mobile self-propelled crushing machine |
| 01/12/1988 | US4718731 Used for excavation work |
| 01/12/1988 | US4718504 Trench excavator |
| 01/12/1988 | US4718182 Trencher with adjustable chisel |
| 01/07/1988 | EP0251876A1 Mechanized assembly for digging a trench and laying elongate objects |
| 01/07/1988 | EP0251660A1 Method and apparatus for soil excavation and the like |
| 01/05/1988 | US4716665 Folding trencher boom |
| 12/26/1987 | CN87201128U Hydraulic grab with self-contained power unit |
| 12/22/1987 | US4714381 Machine for laying conduit and methods for use thereof |
| 12/22/1987 | US4714379 Pipelay in slurry trench |
| 12/22/1987 | US4714378 Apparatus and method for trenching subsea pipelines |
| 12/22/1987 | US4713898 Railroad mounted trench digger |
| 12/16/1987 | EP0249551A1 Digging wheel, in particular for digging trenches |
| 12/16/1987 | EP0249231A1 Improved trenching apparatus for forming inground retaining walls |
| 12/15/1987 | US4712320 Four-way reversible ditcher blades |
| 12/09/1987 | EP0248189A1 Device for making a slit |
| 12/08/1987 | CA1230023A1 Reversible percussive action machine |
| 12/03/1987 | DE3618299A1 Trench-ditching machine |
| 12/03/1987 | DE3617681A1 Machine which can be self-propelled with interchangeable tools or implements |
| 12/01/1987 | US4710059 Method and apparatus for simultaneous trenching and pipe laying in an arctic environment |
| 11/24/1987 | US4708211 Reversible air-operated percussive action machine for driving holes in the ground |
| 11/19/1987 | DE3616287A1 Dredger with grabs |
| 11/17/1987 | CA1229268A1 Machine for driving holes in the ground |
| 11/12/1987 | DE3638599C1 Dredging apparatus for dredging light mud |