John W. Dumont Jr.

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Monmouth, ME, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for use in dehumidifying and otherwise conditioning air w...
- Patent number 4,987,952
- Issue date Jan 29, 1991
- Dumont Holding Company
- David E. Beal
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Underfed stoker boiler for burning bituminous coal and other solid...
- Patent number 4,697,530
- Issue date Oct 6, 1987
- Dumont Holding Company
- Richard P. Marcotte
- F22 - STEAM GENERATION
Information Patent Grant
Boiler for use with charges of wood fuel
- Patent number 4,389,980
- Issue date Jun 28, 1983
- Dumont Industries
- Richard P. Marcotte
- F24 - HEATING RANGES VENTILATING