David R. Friddell

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Grand Blanc, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
High pressure dual-action hydraulic pump
- Patent number 8,061,179
- Issue date Nov 22, 2011
- GM Global Technology Operations LLC
- David R. Jensen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Gravity fill system with pressure check valve
- Patent number 7,937,979
- Issue date May 10, 2011
- GM Global Technology Operations LLC
- Mike M. Ghiran
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Bending apparatus and method of bending a metal object
- Patent number 7,584,637
- Issue date Sep 8, 2009
- GM Global Technology Operations, Inc.
- Mike M. Ghiran
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Quick change bend tooling bolster
- Patent number 7,360,385
- Issue date Apr 22, 2008
- GM Global Technology Operations, Inc.
- Douglas T. Wohlenhaus
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Gravity Fill System with Pressure Check Valve
- Publication number 20100037670
- Publication date Feb 18, 2010
- GM Global Technology Operations, Inc.
- Mike M. Ghiran
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
High Pressure Dual-Action Hydraulic Pump
- Publication number 20100040485
- Publication date Feb 18, 2010
- GM Global Technology Operations, Inc.
- David R. Jensen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
BENDING APPARATUS AND METHOD OF BENDING A METAL OBJECT
- Publication number 20090178453
- Publication date Jul 16, 2009
- GM Global Technology Operations, Inc.
- Mike M. Ghiran
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...