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John Willigman
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Elk Grove Village, IL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Push/push reset programmer
Patent number
4,948,928
Issue date
Aug 14, 1990
Eaton Corporation
John Willigman
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electrical programmer
Patent number
4,755,635
Issue date
Jul 5, 1988
Eaton Corporation
John Willigman
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Snap action timer switch assembly
Patent number
4,587,389
Issue date
May 6, 1986
Controls Company of America
John Willigman
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Increased capacity program timer
Patent number
4,560,846
Issue date
Dec 24, 1985
The Singer Company
Jerome C. Klopp
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Timer drive mechanism
Patent number
4,467,664
Issue date
Aug 28, 1984
The Singer Company
John Willigman
H01 - BASIC ELECTRIC ELEMENTS