Laurence Richard Penn

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Northants, GB

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Patents Grantslast 30 patents

Information Patent Grant
Metering device
- Patent number 6,059,148
- Issue date May 9, 2000
- Keller; Wilhelm A.
- Wilhelm A. Keller
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Metering device
- Patent number 5,850,946
- Issue date Dec 22, 1998
- Keller; Wilhelm A.
- Wilhelm A. Keller
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Metering device for fluids
- Patent number 5,547,110
- Issue date Aug 20, 1996
- Keller; Wilhelm A.
- Wilhelm A. Keller
- G01 - MEASURING TESTING