William E. Marhofer

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Edmonton, CA

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Patents Grantslast 30 patents

Information Patent Grant
External pipe welding apparatus
- Patent number 6,953,909
- Issue date Oct 11, 2005
- O.J. Pipelines Canada
- William E. Marhofer
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
External pipe welding apparatus
- Patent number 6,657,161
- Issue date Dec 2, 2003
- O.J. Pipelines Canada
- William E. Marhofer
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Mobile automated pipeline welding and quality control system
- Patent number 5,932,123
- Issue date Aug 3, 1999
- O.J. Pipelines Corp.
- William E. Marhofer
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
External pipe welding apparatus
- Publication number 20040056066
- Publication date Mar 25, 2004
- O.J. Pipelines Canada
- William E. Marhofer
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Welding carriage
- Publication number 20030047585
- Publication date Mar 13, 2003
- Robert Wendell McCombe
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
External pipe welding apparatus
- Publication number 20020060211
- Publication date May 23, 2002
- William E. Marhofer
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR