John R. Martin

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Foxboro, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Pressure sensing device having fill fluid contamination detector
- Patent number 5,072,190
- Issue date Dec 10, 1991
- The Foxboro Company
- John R. Martin
- G01 - MEASURING TESTING
Information Patent Grant
Method of making a compliant fluid-impermeable element
- Patent number 4,950,499
- Issue date Aug 21, 1990
- The Foxboro Company
- John R. Martin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Compliant diaphragm material
- Patent number 4,837,068
- Issue date Jun 6, 1989
- The Foxboro Company
- John R. Martin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Composite electrode structure
- Patent number 4,565,619
- Issue date Jan 21, 1986
- The Foxboro Company
- Robert J. Gardner
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for maintaining clean optical surfaces in process environ...
- Patent number 4,387,973
- Issue date Jun 14, 1983
- The Foxboro Company
- John R. Martin
- G02 - OPTICS