Joseph W. Yatchum

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McMurray, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Tap selector anti-arcing system
- Patent number 5,191,179
- Issue date Mar 2, 1993
- Cooper Power Systems, Inc.
- Joseph W. Yatchum
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Tap selector anti-arcing system
- Patent number 5,056,377
- Issue date Oct 15, 1991
- Cooper Industries, Inc.
- Joseph W. Yatchum
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Current transfer shunt arrangement
- Patent number 4,533,798
- Issue date Aug 6, 1985
- McGraw-Edison Company
- Joseph W. Yatchum
- H01 - BASIC ELECTRIC ELEMENTS