David N. Duperon

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Lake Stevens, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Compound resistor manufacturing method
- Patent number 4,907,341
- Issue date Mar 13, 1990
- John Fluke Mfg. Co., Inc.
- Roy W. Chapel
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Compound resistor and manufacturing method therefore
- Patent number 4,803,457
- Issue date Feb 7, 1989
- Roy W. Chapel
- H01 - BASIC ELECTRIC ELEMENTS