Donald D. Armstrong

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Stored energy circuit breaker
- Patent number 4,166,205
- Issue date Aug 28, 1979
- Westinghouse Electric Corp.
- Alfred E. Maier
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Circuit breaker spring assembly
- Patent number 4,114,005
- Issue date Sep 12, 1978
- Westinghouse Electric Corp.
- Alfred E. Maier
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electric switchgear device with interlocking handle means
- Patent number 4,034,169
- Issue date Jul 5, 1977
- Westinghouse Electric Corporation
- Donald D. Armstrong
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER