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Dean D. Riggs
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Avon Lake, OH, US
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last 30 patents
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Patent Grant
Proportional control for guidance systems, and the like
Patent number
3,997,757
Issue date
Dec 14, 1976
The Cecil Equipment Company
Shelby Cecil
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Patent Grant
Water treatment device with transistorized circuit
Patent number
3,957,617
Issue date
May 18, 1976
Water Technology Service, Inc.
Henry S. Aber
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Patent Grant
Process of water treatment
Patent number
3,954,589
Issue date
May 4, 1976
Water Technology Service, Inc.
Henry S. Aber
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE