Assignee
CHARLES MACHINES WORKS INC
US·6 granted patents·1 pending application·210 citations·filing 1993–2007
Top patents by PatentIndex Score
7 records- 0189US5541516ALocator equipment with self-integrity test capabilityCHARLES MACHINES WORKS INC·Filed 1993·Granted Jul 30, 1996·77 cites·22 claims
- 0287US7952357B2Receiver system for determining the location of a magnetic field sourceCHARLES MACHINES WORKS INC·Filed 2007·Granted May 31, 2011·18 cites·11 claims
- 0379USD511531SExcavator tool carrierCHARLES MACHINES WORKS INC·Filed 2004·Granted Nov 15, 2005·25 cites·1 claims
- 0478US6896077B1Rotary driven pipe-bursting toolCHARLES MACHINES WORKS INC·Filed 2002·Granted May 24, 2005·20 cites·39 claims
- 0574US6761231B1Rotary driven drilling hammerCHARLES MACHINES WORKS INC·Filed 2002·Granted Jul 13, 2004·44 cites·24 claims
- 0664US6290606B1Polygonal ball drive system for earth augerCHARLES MACHINES WORKS INC·Filed 1998·Granted Sep 18, 2001·26 cites·17 claims
- 0749US2007253781A1Cable Injector And Puller For Pipe BurstingCHARLES MACHINES WORKS INC·Filed 2007·Application pending·0 cites
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