David A. Rock

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Ravenna, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Self-current-limiting devices and method of making same
- Patent number 5,057,673
- Issue date Oct 15, 1991
- Fluorocarbon Company
- Richard W. Farkas
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Self-regulating heater having a heat tape that stops tracking
- Patent number 4,889,975
- Issue date Dec 26, 1989
- The Fluorocarbon Company
- Richard W. Farkas
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR