E21B 1/00

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Showing 1 to 20 of 142 results

Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9995084 Hammer reamer for expanding a pilot boreAug 08, 16Jun 12, 18Not available
9970245 Dual circulation drilling systemDec 21, 15May 15, 18Strada Design Limited
9969072 Hand-held power tool and production methodApr 05, 12May 15, 18Hilti Aktiengesellschaft
9951409 Modified surface properties of percussion tools used in downhole drillingSep 30, 15Apr 24, 18Varel International Ind. L.P.
9951616 Arrangement for controlling automated operation modeMar 28, 14Apr 24, 18Sandvik Mining and Construction Oy
9938768 Device and system for percussion rock drillingMay 16, 14Apr 10, 18Epiroc Drilling Tools Aktiebolag
9938769 Ram boring deviceJul 29, 15Apr 10, 18Tracto-Technik GmbH & Co. KG
9915111 System and method for conducting drilling and coring operationsFeb 03, 11Mar 13, 18XTREME DRILLING AND COIL SERVICES CORP.
9873178 Rotary gear transmission for toolsOct 09, 14Jan 23, 18ARBORTECH INDUSTRIES LIMITED
9863547 Valve of a hydraulically striking deviceAug 19, 15Jan 09, 18Doofor Oy
9828802 Fluid pulse drilling toolOct 24, 14Nov 28, 17SJM DESIGNS PTY LTD.
9815160 Percussion unitApr 24, 13Nov 14, 17ROBERT BOSCH GMBH
9803441 Seated hammer apparatus for core samplingNov 08, 13Oct 31, 17FLEXIDRILL LIMITED
9782881 Device for transmitting energy to a fastenerSep 17, 10Oct 10, 17HILTI AKTIENGESELLSCHAFT
9771690 Quick change rail fastener driving workhead unitAug 14, 14Sep 26, 17NORDCO INC.
9737983 Percussion pistonNov 19, 15Aug 22, 17SANDVIK MINING AND CONSTRUCTION OY
9720129 Electronics for a thin bed array induction logging systemSep 23, 14Aug 01, 17PICO TECHNOLOGIES LLC
9713867 Nail magazine for nailing gunAug 25, 14Jul 25, 17TAIZHOU DAJIANG IND. CO., LTD.
9677340 High speed precision guide device for creating holes for piles or other support membersMar 15, 16Jun 13, 17Not available
9637982 Shock wave modification in percussion drilling apparatus and methodAug 27, 14May 02, 17SANDVIK INTELLECTUAL PROPERTY AB

Showing 1 to 20 of 142 results