David Needham

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Derbyshire, GB

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Patents Grantslast 30 patents

Information Patent Grant
Fluid flow proportioning device
- Patent number 6,497,244
- Issue date Dec 24, 2002
- David Needham
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Fluid flow proportioning device
- Publication number 20010039969
- Publication date Nov 15, 2001
- David Needham
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...