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Richard L. Marcengill
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Walhalla, SC, US
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last 30 patents
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Patent Grant
Impact tool driver
Patent number
5,992,538
Issue date
Nov 30, 1999
Power Tool Holders Incorporated
Richard L. Marcengill
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Grant
Quick release integrated collet and chuck device
Patent number
5,921,563
Issue date
Jul 13, 1999
Power Tool Holders Incorporated
Mark S. Huggins
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Impact tool driver
Patent number
5,908,076
Issue date
Jun 1, 1999
Power Tool Holders Incorporated
Richard L. Marcengill
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Grant
Lever actuated keyless chuck
Patent number
5,704,616
Issue date
Jan 6, 1998
Power Tool Holders Incorporated
Robert O. Huff
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR