| Patents for E02F 5 - Dredgers or soil-shifting machines for special purposes (6,683) |
|---|
| 04/27/1982 | US4326347 Narrow ditch trencher |
| 04/21/1982 | EP0049925A2 Hydraulic excavator for wells |
| 04/21/1982 | EP0049846A2 Method of forming the bottom of a trench and for laying pipes on said bottom |
| 04/13/1982 | US4324435 Lock assembly for earthworking apparatus |
| 04/13/1982 | US4324056 Wiping device for a ditch digging machine |
| 04/06/1982 | US4322899 Self-propelled, non-riding trenching machine with a steering mechanism |
| 03/30/1982 | US4321970 Ripper apparatus |
| 03/18/1982 | WO1982000839A1 Apparatus and method for compacting material |
| 03/18/1982 | WO1982000747A1 Impacting rock breaker |
| 03/16/1982 | US4319739 Metallurgical processing vessel |
| 03/09/1982 | US4318638 Cable detensioning apparatus |
| 03/09/1982 | US4318445 Side shift plow assembly |
| 02/18/1982 | WO1982000486A1 Slurry trench method and apparatus for constructing underground walls |
| 02/09/1982 | US4314414 Trench digging apparatus and bearing therefor |
| 02/03/1982 | EP0044871A1 Method of burying wire, tube or cable under ground |
| 02/02/1982 | US4313504 Tandem ripper assembly |
| 02/02/1982 | CA1117558A1 Trench digging apparatus |
| 01/27/1982 | EP0044314A1 Device for laying underwater cables |
| 01/26/1982 | US4312144 Multi-blade ditching machine |
| 01/26/1982 | CA1116879A1 Method and apparatus for making holes in the ground, particularly in view of the subsequent planting of poles, stakes or similar |
| 01/21/1982 | WO1982000076A1 Convertible vibrating ripper |
| 12/22/1981 | US4306364 Vertical excavating arrangement |
| 12/09/1981 | EP0041425A1 Method of making drain trenches |
| 12/08/1981 | US4304440 Roller cutter |
| 11/24/1981 | US4301606 Apparatus for excavating a trench underneath a pipeline installed on the sea bottom |
| 10/20/1981 | US4295757 Jet sled spoil scoop apparatus |
| 10/06/1981 | US4293238 Ditchless drainlayer |
| 09/22/1981 | US4290488 Driving machine including speed synchronized earth working traction wheel |
| 09/22/1981 | CA1109278A1 Trenching apparatus and method |
| 09/15/1981 | US4289424 Apparatus for laying conduit, cable and the like in or beneath fill material |
| 09/08/1981 | CA1108417A1 Laying cables and the like under water |
| 08/25/1981 | US4285613 Apparatus for forming and installing underground drainpipe |
| 08/25/1981 | CA1107708A1 Sheeting device |
| 08/20/1981 | WO1981002317A1 Method of burying wire,tube or cable under ground |
| 08/18/1981 | US4283867 Backfilling apparatus with adjustable filling augers |
| 08/11/1981 | US4283681 System for detecting an underwater buried cable |
| 08/11/1981 | US4283160 Corrugated pipe fabricator and installer device and methods of making and using the same |
| 08/11/1981 | US4282662 Rotary trench digging machine |
| 07/28/1981 | US4280289 Underwater trenching machine for burying pipeline and the like |
| 07/28/1981 | US4280288 Modular draging unit for collecting solid bodies on an underwater bed |
| 07/28/1981 | CA1105727A1 Apparatus for the subaqueous entrenching of pipes |
| 07/23/1981 | WO1981002034A1 Device for laying underwater cables |
| 07/14/1981 | US4278295 Impacting rock breaker |
| 07/14/1981 | US4277899 Excavating machine with position indication of its work implement |
| 07/14/1981 | US4277898 Hydraulic control system for excavating machine |
| 06/23/1981 | US4274760 Self-propelled underwater trenching apparatus and method |
| 06/23/1981 | CA1103467A1 No translation available |
| 06/23/1981 | CA1103446A1 Impact ripper |
| 06/16/1981 | US4273050 Placement method for Q.D. charges using minimum diving time |
| 06/10/1981 | EP0030082A1 Agronomic process and implement for use therein |
| 06/03/1981 | EP0029816A1 Ditching method and device |
| 05/28/1981 | WO1981001433A1 Ditching method and device |
| 05/26/1981 | US4269562 Trench trash compactor |
| 05/26/1981 | US4269541 Implement for the laying of cables and the like |
| 05/19/1981 | US4268398 Sludge agitating method |
| 05/05/1981 | US4265037 Device for assembling tools on a wheel, particularly cutting tools on a trenching machine |
| 04/22/1981 | EP0027275A1 Ground preparation tool for reforestation |
| 04/22/1981 | EP0027150A1 Apparatus for forming and installing underground drainpipe |
| 04/16/1981 | WO1981001024A1 Device for removing snow |
| 04/14/1981 | US4261119 Method for digging and transporting material |
| 04/08/1981 | EP0026182A1 Device for burying a line in the sea bed. |
| 04/07/1981 | US4260290 Cable plow assembly |
| 04/07/1981 | CA1098921A1 Universal digging boom |
| 04/01/1981 | EP0026097A1 Agricultural implement and method of lifting same |
| 03/31/1981 | US4258956 Method and apparatus for driving a single transversely elongated tool with a plurality of force transmitting beams |
| 03/24/1981 | US4257648 Non-resonant cyclic drive system employing rectification of the cyclic output |
| 03/24/1981 | CA1098086A1 Dragline equipped with hopper means and loading means |
| 03/18/1981 | EP0025407A1 Method for laying cables and pipes under runways, roads or the like |
| 03/17/1981 | US4256342 Dragline equipped with hopper means and loading means |
| 03/17/1981 | US4255883 Attitude control system |
| 03/17/1981 | US4255882 Dragging type cutter head for a suction dredger |
| 03/17/1981 | CA1097511A1 Method and a self-propelling machine for digging trenches under water |
| 03/03/1981 | US4253256 Self-loading dualistic earth excavator with connecting telescopic conveying and dualistic distribution means |
| 02/24/1981 | US4252462 Chemical landfill |
| 02/24/1981 | US4252376 Ripping tool driving apparatus |
| 02/24/1981 | CA1096186A1 Marine pipeline installation system |
| 02/18/1981 | EP0023930A1 A material working machine, particularly a pavement planer |
| 02/17/1981 | US4251111 Resonant beam for tool driving apparatus |
| 02/17/1981 | US4250760 Drive assembly for pavement planing apparatus |
| 02/03/1981 | US4247997 Trench excavating and shoring apparatus |
| 02/03/1981 | CA1094830A1 Sub-surface irrigation channel forming vehicles |
| 02/03/1981 | CA1094827A1 Implement for the laying of cables or similar |
| 01/28/1981 | EP0022822A1 Roller cutter |
| 01/22/1981 | WO1981000124A1 Reversible percussive action device |
| 01/20/1981 | US4245927 Laying of pipes or cables in a bed of material |
| 01/20/1981 | US4245705 Apparatus for taking off vibratory power for tractor |
| 01/13/1981 | US4244123 Guidance device for drain tile laying machine |
| 12/23/1980 | US4240216 Land forming and/or farming apparatus |
| 12/23/1980 | CA1091939A1 Marine pipeline installation system |
| 12/16/1980 | US4239291 Industrial metallurgical delining assembly |
| 12/16/1980 | US4239085 Side shift assembly for earth-working implements |
| 12/16/1980 | CA1091456A1 Guidance device for drain tile laying machine |
| 12/10/1980 | EP0019909A1 Process and apparatus for embedding cables and the like in a water floor |
| 12/09/1980 | CA1091259A1 Extracting ores from the sea bottom |
| 11/25/1980 | CA1090280A1 Method and apparatus for digging and transporting soil and sand, stones and rocks, minerals and the like |
| 11/14/1980 | EP0016811A4 Tool driving apparatus. |
| 11/12/1980 | EP0018891A1 Submarine vehicle for dredging and lifting minerals at a great depth |
| 11/11/1980 | US4232982 Excavating and pipeline installation system |
| 11/04/1980 | US4231172 Floating dredger and treatment plant |
| 10/29/1980 | EP0018278A1 Apparatus for handling bulk materials |