Donald G. Fettes

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Regina, CA

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Patents Grantslast 30 patents

Information Patent Grant
Regeneration sensing device
- Patent number 4,917,794
- Issue date Apr 17, 1990
- Water Conditioning Canada Ltd.
- Don G. Fettes
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Chemical feeder for water softeners
- Patent number 4,003,710
- Issue date Jan 18, 1977
- L. W. Fleckenstein, Inc.
- Andrew Joseph Fleckenstein
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL