Richard L. Hummel

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Toronto, CA

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Patents Grantslast 30 patents

Information Patent Grant
Process to produce hydrogen and/or hemihydrate calcium sulphate fro...
- Patent number 5,458,744
- Issue date Oct 17, 1995
- Materials-Concepts-Research Limited
- Murry C. Robinson
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Solar energy collection system
- Patent number 4,323,054
- Issue date Apr 6, 1982
- Richard L. Hummel
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Solar energy collection system
- Patent number 4,126,270
- Issue date Nov 21, 1978
- Richard L. Hummel
- F24 - HEATING RANGES VENTILATING