| Patents for E02F 5 - Dredgers or soil-shifting machines for special purposes (6,683) |
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| 05/18/2005 | CN2700408Y Electric actuator of pipe tapping machine |
| 05/18/2005 | CN2700407Y Drilling and reaming type pipe transportation pool excavator |
| 05/18/2005 | CA2487460A1 A drilling machine having rotary tools |
| 05/12/2005 | WO2005042855A2 Earth scraper with track apparatus |
| 05/12/2005 | CA2544122A1 Earth scraper with track apparatus |
| 05/11/2005 | EP1529924A1 Pressurized gerabox and method of regulating pressure inside said gearbox |
| 05/11/2005 | CN1614161A Self-desilting and dredging method and apparatus for reservoir |
| 05/11/2005 | CN1614160A Gear unit and method for controlling an internal pressure in the gear unit |
| 05/10/2005 | CA2281162C Method and apparatus for ground working |
| 05/05/2005 | US20050091885 Gear unit and method for controlling an internal pressure in the gear unit |
| 05/03/2005 | US6886644 Apparatus and method for horizontal drilling |
| 04/21/2005 | WO2005035884A1 Dredger cuttertooth manipulator |
| 04/21/2005 | US20050082070 Earth scraper with track apparatus |
| 04/19/2005 | US6882283 Cable plow installation monitor method and apparatus |
| 04/14/2005 | WO2005033422A2 Method for dredging without the significant consumption of water nor significant causing of pollution |
| 04/14/2005 | WO2004106981A3 Exterior installation of armored fiber optic cable |
| 04/14/2005 | US20050077088 Hole cleaning and/or forming tool |
| 04/14/2005 | DE10345320A1 Saugbagger Suction dredger |
| 04/13/2005 | EP1522636A1 Digger cuttertooth replacing robot on a dredger |
| 04/12/2005 | CA2266544C Machine for digging under pipes and caterpillar traction device |
| 04/06/2005 | EP1520940A2 suction excavator |
| 04/05/2005 | US6874973 Self-propelled soil modifying machine |
| 04/05/2005 | US6874581 Compact bed edging machine |
| 04/05/2005 | US6874261 Method for treating an underwater bed |
| 03/31/2005 | WO2004088198A3 Pipeline trench system and method of construction |
| 03/29/2005 | US6871425 Wing plow apparatus for attachment to a vehicle for carrying out a benching operation |
| 03/29/2005 | CA2278224C Method for fitting pipes |
| 03/24/2005 | US20050063785 Cable of pipe retrieval and burial apparatus and methods |
| 03/23/2005 | CN1599826A Method of constructing civil work bedding layer and bedding material for civil work |
| 03/17/2005 | US20050058607 Control of process humidity to produce large, porous particles |
| 03/16/2005 | EP1513987A1 Apparatus for removing sediment and functional unit for use therein |
| 03/15/2005 | US6865827 Utility device having an improved rotatable drive mechanism |
| 03/02/2005 | CN1589354A Cable or pipe retrieval and burial apparatus and methods |
| 03/02/2005 | CN1587552A Rotary monitor for underwater dredger |
| 03/01/2005 | US6860043 Shroud for a digging machine |
| 02/24/2005 | US20050042034 Pipeline trench system and method of encasing for spill containment |
| 02/23/2005 | CN2681416Y Wheel type groove scratching machine for pre-embedding of optical cable |
| 02/23/2005 | CN2680739Y Drilling and trench digging machine for laying electrical pole, electric cable, optical cable |
| 02/17/2005 | US20050034337 Wheel track rut filler |
| 02/17/2005 | DE10308538B4 Verfahren zum Herstellen einer Schlitzwand im Boden, Schlitzwandfräse und Schlitzwandfräsvorrichtung A method for making a trench wall in the ground, a trench wall cutter and trench wall |
| 02/16/2005 | CN2679249Y Sand discharging appts. for reservoir |
| 02/16/2005 | CN1582358A Trenching method and apparatus |
| 02/15/2005 | US6854931 Apparatus for establishing adjustable depth bed in trenches for utility lines and encasing the lines |
| 02/09/2005 | CN2677456Y Underground optical cable laying apparatus without ditching |
| 02/08/2005 | CA2122068C Pipeline padding apparatus with rotary feeder |
| 02/03/2005 | WO2004073383A3 Subsoiling grapple rake |
| 02/03/2005 | US20050027412 Amphibious robot devices and related methods |
| 02/02/2005 | CN2675747Y Spraying-stirring type artificial navigable depth generator |
| 02/01/2005 | US6848197 Spray dried particles having specified aerodynamic characteristics are produced by atomizing a liquid feed and contacting the liquid feed with a drying gas, such as, for example, air or nitrogen. |
| 01/26/2005 | CN2673956Y Air jetting and mud suspension at different points of depth type water treating equipment |
| 01/26/2005 | CN2673955Y Collar vortex sand removing equipment |
| 01/20/2005 | WO2005005736A2 Trenching apparatus and method |
| 01/19/2005 | CN2672170Y Slurry dreading device for river bed |
| 01/19/2005 | CN1566546A Mud starting device capable of automatically adapting tide |
| 01/19/2005 | CN1565923A Fast separation type dredger |
| 01/18/2005 | US6843006 Ditch digger |
| 01/18/2005 | US6843001 Scraper |
| 01/12/2005 | CN2670450Y Rapid earth take-out device of bored concrete pile |
| 01/12/2005 | CN1563595A Harness method for dredging riverway containing much fluvial sand |
| 01/11/2005 | US6839989 Drilling apparatus for hard ground |
| 01/11/2005 | US6839988 Drilling apparatus for hard ground |
| 01/06/2005 | WO2005001210A1 Construction method of underground diaphragm wall and excavator for the underground diaphragm wall |
| 01/06/2005 | US20050000123 Cutting device for cutting trenches in the ground |
| 01/06/2005 | US20050000122 Cutting tool for digging trenches, and enabling the cutter head to be changed quickly |
| 01/05/2005 | CN2668705Y Grooving machine |
| 01/05/2005 | CN1560385A High efficient hole drilling machine for laying cable and water pipe of urban constructure |
| 01/04/2005 | US6837653 Ploughs |
| 12/30/2004 | US20040262980 Method and means for recovering hydrocarbons from oil sands by underground mining |
| 12/29/2004 | CN1558044A Preparation method of manpower dug pile and lifting type combined forming device thereof |
| 12/23/2004 | US20040256313 Erosion barriers; comprises biodegradable covering (burlap) filled with biodegradable material via blower |
| 12/23/2004 | DE19781758B4 Selbstfahrende materialbearbeitende Vorrichtung Self-propelled material-processing device |
| 12/22/2004 | CN2664857Y Underwater desilting and reaping device for ecological harness |
| 12/21/2004 | CA2277237C Ditch digging and cleaning system |
| 12/21/2004 | CA2129494C Rake attachment for a skid steer |
| 12/16/2004 | WO2004094886A3 Padding machine and method of use |
| 12/16/2004 | DE10337977B3 Arrangement for producing excavation and laying cable channel along tracks has movable with jib, bucket that protrudes into ground with profile inclined forwards and downwards in working direction |
| 12/15/2004 | EP1486620A1 Cutting tool for the making of trenches, allowing a fast change of the cutter head. |
| 12/15/2004 | EP1325987B1 Device for opening narrow trenches and placing matching prefabricated elements |
| 12/15/2004 | CN1554834A Safe pipeline digging system and its digging method |
| 12/15/2004 | CN1554833A Crawler-type under water ecological precision thin layer slurry dredger |
| 12/14/2004 | US6830412 Device for digging narrow trenches and laying prefabricated tongued and grooved components |
| 12/14/2004 | US6830235 Hydraulic powered capstan attachment |
| 12/09/2004 | WO2004106981A2 Exterior installation of armored fiber optic cable |
| 12/09/2004 | US20040247398 Self-propelled all terrain track driven trench box carrier |
| 12/09/2004 | CA2526945A1 Method for the automatic adjustment of ground profiles in waters |
| 12/04/2004 | CA2735355A1 Method and means for recovering hydrocarbons from oil sands by underground mining |
| 12/04/2004 | CA2469247A1 A method and means for recovering hydrocarbons from oil sands by underground mining |
| 12/02/2004 | US20040238217 Soil probe insertion arrangement and method of use |
| 12/02/2004 | US20040238190 Plough attachment |
| 12/02/2004 | US20040237352 Scraper |
| 12/01/2004 | EP1481578A1 Attachable ploughing element |
| 12/01/2004 | CN2659975Y Clog clearing appts. for relief well of water conservation engineering |
| 11/30/2004 | US6824681 Biodegradable soil erosion barrier comprising naturally rotting mesh tube and vegetation seeded waste filler |
| 11/25/2004 | US20040234345 Method for making a trench wall in the ground, trench wall cutter and trench wall cutting device |
| 11/25/2004 | US20040234215 Exterior installation of armored fiber optic cable |
| 11/23/2004 | US6821054 Method and system for laying pipe through the use of a plow |
| 11/23/2004 | US6820358 Compact vehicle for composting manure storage under high-rise avian houses |
| 11/18/2004 | CA2524231A1 Air-assisted loading bucket scraper and air-assisted loading methods |
| 11/17/2004 | EP1477616A2 Device for soil shifting and levelling |
| 11/17/2004 | CN2656502Y Highway leakage proof wall groove cleaning machine |