John R. Perulfi

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Monroeville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Multiple vacuum interrupter fluid insulated circuit breaker with is...
- Patent number 4,972,055
- Issue date Nov 20, 1990
- ABB Power T&D Company Inc.
- John R. Perulfi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Current transformer
- Patent number 4,510,477
- Issue date Apr 9, 1985
- Westinghouse Electric Corp.
- Joseph R. Rostron
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-voltage puffer-type compressed-gas circuit-interrupter assemblage
- Patent number 4,293,747
- Issue date Oct 6, 1981
- Westinghouse Electric Corp.
- John R. Perulfi
- H01 - BASIC ELECTRIC ELEMENTS