Robert C. Still

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Tucson, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Removable operator for gate valves
- Patent number 4,231,389
- Issue date Nov 4, 1980
- New Concepts, Inc.
- Robert C. Still
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Replaceable one piece liner for a gate valve
- Patent number 4,112,969
- Issue date Sep 12, 1978
- New Concepts, Inc.
- Robert C. Still
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Gate valve with replaceable liner
- Patent number 4,051,863
- Issue date Oct 4, 1977
- New Concepts, Inc.
- Robert C. Still
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Biasable seal for gate valves
- Patent number 4,026,517
- Issue date May 31, 1977
- New Concepts, Inc.
- Robert C. Still
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Gate valve with replaceable liner
- Patent number 3,993,092
- Issue date Nov 23, 1976
- New Concepts, Inc.
- Robert C. Still
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...