Mark A. Marshall

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El Dorado Hills, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Tube squaring tool
- Patent number 5,941,145
- Issue date Aug 24, 1999
- Tri Tool Inc.
- Mark A. Marshall
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Quick setting and release actuator for work holder
- Patent number 5,934,688
- Issue date Aug 10, 1999
- Tri Tool Inc.
- Jerald W. VanderPol
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Tube squaring tool
- Patent number D407724
- Issue date Apr 6, 1999
- Tri Tool Inc.
- Mark A. Marshall
- D15 - Machines not elsewhere specified
Information Patent Grant
Quick setting and release actuator for work holder
- Patent number 5,743,539
- Issue date Apr 28, 1998
- Tri Tool Inc.
- Jerald W. VanderPol
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Pipe end preparation tool having improved torque reacting and clamp...
- Patent number 5,083,484
- Issue date Jan 28, 1992
- Tri Tool Inc.
- Jerald VanderPol
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Pipe end preparation tool having improved torque reacting and clamp...
- Patent number 4,955,263
- Issue date Sep 11, 1990
- Tri Tool Inc.
- Jerald VanderPol
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR