Arthur J. Williams

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Youngstown, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Fluid valve structures
- Patent number 4,789,002
- Issue date Dec 6, 1988
- Commercial Shearing, Inc.
- Arthur Williams
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Fluid valve structures
- Patent number 4,709,724
- Issue date Dec 1, 1987
- Commercial Shearing, Inc.
- Arthur Williams
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Pressure compensated control valves
- Patent number 4,361,169
- Issue date Nov 30, 1982
- Commercial Shearing, Inc.
- Arthur J. Williams
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Control valves
- Patent number 4,352,375
- Issue date Oct 5, 1982
- Commercial Shearing, Inc.
- Arthur J. Williams
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Low friction drag seals
- Patent number 4,262,915
- Issue date Apr 21, 1981
- Commercial Shearing, Inc.
- Arthur J. Williams
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Relief valves and mine props incorporating the same
- Patent number 4,237,769
- Issue date Dec 9, 1980
- Commercial Shearing, Inc.
- Arthur J. Williams
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...