Philip D. Smith

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Pleasant Hill, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Solar energy collector
- Patent number 4,038,969
- Issue date Aug 2, 1977
- Philip D. Smith
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Solar collector with conical elements
- Patent number 4,030,477
- Issue date Jun 21, 1977
- Philip D. Smith
- F24 - HEATING RANGES VENTILATING