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William H. Hofferberth
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Finksburg, MD, US
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last 30 patents
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Patent Grant
Contact assembly including spring loaded cam follower overcenter means
Patent number
4,488,133
Issue date
Dec 11, 1984
Siemens-Allis, Inc.
David P. McClellan
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Stationary contact combination
Patent number
4,139,754
Issue date
Feb 13, 1979
I-T-E Imperial Corporation
William H. Hofferberth
H01 - BASIC ELECTRIC ELEMENTS