David P. Kelly

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Rochester Hills, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Resistive welding electrode and method for spot welding steel and a...
- Patent number 10,259,071
- Issue date Apr 16, 2019
- GM Global Technology Operations LLC
- David R. Sigler
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of welding a cage and nut assembly to a workpiece
- Patent number 6,770,835
- Issue date Aug 3, 2004
- General Motors Corporation
- James Franklin Hengel
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Projection welding of flanged weld nut
- Patent number 6,765,171
- Issue date Jul 20, 2004
- General Motors Corporation
- James Franklin Hengel
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and system for testing a joint which joins a first member wi...
- Patent number 6,446,511
- Issue date Sep 10, 2002
- General Motors Corporation
- Robert T. Thornton
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
RESISTIVE WELDING ELECTRODE AND METHOD FOR SPOT WELDING STEEL AND A...
- Publication number 20160279732
- Publication date Sep 29, 2016
- GM GLOBAL TECHNOLOGY OPERATIONS LLC
- David R. Sigler
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
METHOD OF WELDING A CAGE AND NUT ASSEMBLY TO A WORKPIECE
- Publication number 20040149693
- Publication date Aug 5, 2004
- James Franklin Hengel
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR