F. Sheppard Holt

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Winchester, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Internal absorber solar collector
- Patent number 4,307,709
- Issue date Dec 29, 1981
- Carlyle J. Sletten
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Wide angle solar heat collection system
- Patent number 4,058,110
- Issue date Nov 15, 1977
- F. Sheppard Holt
- F24 - HEATING RANGES VENTILATING