William J. Pfister

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Cheshire, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Electrolytic capacitor containing a hydrochloric acid electrolyte
- Patent number 4,531,177
- Issue date Jul 23, 1985
- Sprague Electric Company
- George A. Shirn
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of forming thin film resistor
- Patent number 4,021,277
- Issue date May 3, 1977
- Sprague Electric Company
- George A. Shirn
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...