Douglas W. Mehrens

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Phoenix, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Pump and filter assembly for evaporative coolers
- Patent number 4,424,007
- Issue date Jan 3, 1984
- Douglas W. Mehrens
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Filter assembly for evaporative cooler pumps
- Patent number 4,353,846
- Issue date Oct 12, 1982
- Douglas W. Mehrens
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL