Robert W. Wrightson

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St. Marys, South Australia, AU

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Patents Grantslast 30 patents

Information Patent Grant
Evaporative cooler water spreader
- Patent number 4,460,520
- Issue date Jul 17, 1984
- Robert W. Wrightson
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Evaporative cooler pad assembly
- Patent number 4,460,394
- Issue date Jul 17, 1984
- Robert W. Wrightson
- F28 - HEAT EXCHANGE IN GENERAL