David J. Hand

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Warsaw, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Bio-mass burner construction
- Patent number 5,284,103
- Issue date Feb 8, 1994
- Waste Conversion Systems, Inc.
- David J. Hand
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Bio-mass burner construction
- Patent number 5,178,076
- Issue date Jan 12, 1993
- David J. Hand
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Bio-mass burner with grate therefor and method of operation
- Patent number 4,475,471
- Issue date Oct 9, 1984
- Hand, Jr.; Calvin H.
- Calvin H. Hand
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Bio-mass burner with grate therefor and method of operation
- Patent number 4,395,956
- Issue date Aug 2, 1983
- Hand, Jr.; Calvin H.
- Calvin H. Hand
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Bio-mass burner with grate therefor and method of operation
- Patent number 4,341,199
- Issue date Jul 27, 1982
- Hand, Jr.; Calvin H.
- Calvin H. Hand
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES