John Richard Prestwich

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Patents Grantslast 30 patents

Information Patent Grant
Diaphragm pump with pulse piston position responsive work fluid rep...
- Patent number 4,116,590
- Issue date Sep 26, 1978
- Warwick Pump and Engineering Company Limited
- John Richard Prestwich
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...