| Patents for E02F 5 - Dredgers or soil-shifting machines for special purposes (6,683) |
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| 03/20/2013 | CN102979125A Double-drill grooving machine |
| 03/20/2013 | CN102979124A Scraper slot making machine |
| 03/20/2013 | CN102979123A Throwing and grappling impact grooving machine |
| 03/20/2013 | CN102979122A Shear type slotting machine |
| 03/20/2013 | CN102979114A Single-chain excavating lifting translation bulk material series machinery |
| 03/14/2013 | WO2013035960A1 Vibrating ripper |
| 03/14/2013 | DE102011053503A1 Lifting bar for transporting shoring box, has support frame, suspension connected with support frame for connecting lifting bar with construction machine and two gripping elements having gripping ends |
| 03/13/2013 | CN202787372U Continuous wall grab bucket and hydraulic system of cable drum of continuous wall grab bucket |
| 03/13/2013 | CN202787358U Hopper door |
| 03/13/2013 | CN202787357U Boardside overflowing door |
| 03/13/2013 | CN202787356U Rotary-excavating turtle-step-type silt remover device |
| 03/13/2013 | CN202787355U Split type dredger |
| 03/13/2013 | CN202787354U Self-propelled trailing suction dredger bow thrust device |
| 03/13/2013 | CN202787353U Improved dredging knife for dredger |
| 03/13/2013 | CN202787352U Vertical soil borrowing excavator |
| 03/13/2013 | CN202787351U Lifting device for semi-conduction hydraulic continuous wall grab bucket |
| 03/13/2013 | CN202787350U Hydraulic rubber tube guide device for semi-conduction type continuous wall grab bucket |
| 03/13/2013 | CN202787349U Rotary cutter disc for ditcher of farmland irrigation ditches with trapezoid cross sections |
| 03/13/2013 | CN202787348U Milling wheel support provided with arc swinging type cutting device |
| 03/13/2013 | CN202787346U Oil-proof device for steel cable |
| 03/13/2013 | CN102966135A Silt remover |
| 03/12/2013 | CA2469247C A method and means for recovering hydrocarbons from oil sands by underground mining |
| 03/07/2013 | WO2013032347A1 Suspension system for front working tools in a melioration device |
| 03/07/2013 | WO2012169803A3 Lead supporting device of a punching apparatus |
| 03/06/2013 | CN202768072U Coal slime cleaning and digging machine for underground coal mine water sump in small and medium size |
| 03/06/2013 | CN202767141U Multifunctional excavator |
| 03/06/2013 | CN202767140U Coal slime cleaning and digging machine for underground coal mine water sump |
| 03/06/2013 | CN202767139U Pore-creating working device of excavator with self-equipped motor |
| 03/06/2013 | CN202767138U Slot milling machine frame assembly |
| 03/06/2013 | CN202767137U Slot milling machine frame |
| 03/06/2013 | CN202767136U Deviation rectification device for double-wheel slot milling machine |
| 03/06/2013 | CN202767135U Pulp suction device |
| 03/06/2013 | CN202767134U Combined type slope cutting machine |
| 03/06/2013 | CN202767124U Excavating device of excavator |
| 03/06/2013 | CN102953403A Slot expander of slot sawing machine |
| 02/28/2013 | DE102011086083B3 Harvest cutting device for attachment to excavator, has quick changer for coupling on excavator arm, where supporting foot is provided, on which harvesting cutting device is supported on processing surface |
| 02/27/2013 | EP2562311A2 Vibration nipper for heavy machinery |
| 02/27/2013 | CN202755389U Supporting device of pressure fluid supplying pipe |
| 02/27/2013 | CN202755387U Novel buffering damping pickaxe structure |
| 02/27/2013 | CN202754101U Dredging boat |
| 02/27/2013 | CN102162247B Construction method of branch cast-in-place pile |
| 02/20/2013 | CN202745107U Desilting device used in hydraulic engineering |
| 02/20/2013 | CN202745106U Special bucket for excavating water-saving and antiseepage channel |
| 02/20/2013 | CN202745105U Automatic control device of half guide rod type bucket body position of hydraulic grab bucket of continuous wall |
| 02/20/2013 | CN202745104U Chain for underground continuous retention wall one-step forming machine |
| 02/20/2013 | CN202745103U Slot wall milling device for underground continuous retention wall one-step forming machine |
| 02/20/2013 | CN202745090U Excavating device for pole hole |
| 02/20/2013 | CN102936909A Excavator bucket |
| 02/20/2013 | CN102936908A Environment-friendly dredging method |
| 02/20/2013 | CN102936907A Tire type rack for grooving machine |
| 02/20/2013 | CN102936905A Crushing loading roadway repairing machine for coal mine |
| 02/19/2013 | US8375605 Trenching system |
| 02/14/2013 | WO2013020788A1 Device for removing sea bed |
| 02/13/2013 | CN202730819U Square mud door seal structure |
| 02/13/2013 | CN202730818U Shed supporting mechanism installed on loader-digger |
| 02/13/2013 | CN202730817U Hydraulic sludge agitator |
| 02/13/2013 | CN202730816U Wedge-shaped locking and operating mechanism of mud door |
| 02/13/2013 | CN202730815U Energy dissipation box arrangement structure |
| 02/13/2013 | CN202730814U Pit-pond dredging device |
| 02/13/2013 | CN202730813U Anti-fouling screen |
| 02/13/2013 | CN202730812U Rapid construction groove wall machine |
| 02/13/2013 | CN102926422A Dredging transport ship |
| 02/13/2013 | CN102926421A Device capable of clearing deposits in rivers, lakes and harbors |
| 02/13/2013 | CN102926419A Suction and conveying device of sludge pipeline |
| 02/13/2013 | CN102926416A Laneway repair machine |
| 02/13/2013 | CN102926381A Y-shaped filling pile-forming machine |
| 02/12/2013 | US8371048 Excavation machine with auto reverse |
| 02/07/2013 | US20130031812 Vibration nipper for heavy machinery |
| 02/06/2013 | CN202718160U Excavator shovel loader with chisel-tooth function |
| 02/06/2013 | CN202718159U Dual purpose shovel loader of excavator |
| 02/06/2013 | CN202718158U Triangular shell of hydraulic knapper |
| 02/06/2013 | CN202718157U Straight type shell of hydraulic crusher |
| 02/06/2013 | CN202718156U Underground excavator |
| 02/06/2013 | CN202718154U Silt-resistant excavator |
| 02/06/2013 | CN102913497A Dynamic reversing power-compensating device for hydraulic breaking hammer |
| 01/31/2013 | US20130025169 Excavating systems and methods |
| 01/30/2013 | CN202706097U Wear-resisting block of rake tooth |
| 01/30/2013 | CN202706092U Excavator quartering hammer cantilever damping connection arm |
| 01/30/2013 | CN202706091U On-water locating and stabilizing mechanism of riverway dredging engineering machinery |
| 01/30/2013 | CN202706090U 清淤机械 Dredging machinery |
| 01/30/2013 | CN202706089U Support device for grab bucket, grab bucket and engineering machinery |
| 01/30/2013 | CN202706088U 多功能工程作业机 Multifunction machine engineering work |
| 01/30/2013 | CN202706085U Large-sucking-disc high-pressure water-jetting air residue-removing mud-sucking device |
| 01/30/2013 | CN202706069U Pole pit excavating shovel |
| 01/30/2013 | CN102900109A Land leveler and scarifier thereof |
| 01/30/2013 | CN102900108A Bucket special for deep well |
| 01/29/2013 | CA2767690C Device & method for filling multiple sandbags at a time |
| 01/23/2013 | CN202689074U Screening and crushing bucket |
| 01/23/2013 | CN202689071U Vertical moving guide rail for scraper bucket of trash remover |
| 01/23/2013 | CN202689070U Hydraulic drive rotary drilling device for hydraulic shovel |
| 01/23/2013 | CN202688992U Slag-digging type steel tube composite pile |
| 01/23/2013 | CN102888868A 风动深槽开挖装置 Wind-driven deep trench excavation equipment |
| 01/23/2013 | CN102888867A Mining trencher |
| 01/22/2013 | CA2742573C Earth shaping apparatus for ditching and levelling |
| 01/17/2013 | WO2013009172A1 Drag head and trailing suction hopper dredger |
| 01/17/2013 | WO2012148118A3 Submarine cable laying device |
| 01/16/2013 | CN202672209U Small boring machine for detecting compactness of highway subgrade |
| 01/16/2013 | CN202672208U Field ditch bucket for excavator |
| 01/16/2013 | CN202672207U High speed railway comprehensive grounding engineering cable trench excavator |
| 01/16/2013 | CN202672206U Ox horn excavator |