John F. Oliver

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Wilmington, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Automatic fireplace heating system
- Patent number 4,143,817
- Issue date Mar 13, 1979
- John F. Oliver
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Automatic fireplace heating system
- Patent number 4,106,693
- Issue date Aug 15, 1978
- John F. Oliver
- F24 - HEATING RANGES VENTILATING