Duncan R. Stewart

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Gloucestershire, GB

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Patents Grantslast 30 patents

Information Patent Grant
Pressure vessels having end closures and retainers
- Patent number 5,357,847
- Issue date Oct 25, 1994
- Hytork Actuators Limited
- Duncan R. Stewart
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Fluid-pressure-operated actuators
- Patent number 4,716,815
- Issue date Jan 5, 1988
- Hytork Actuators Limited
- Duncan R. Stewart
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Fluid-pressure operated actuators
- Patent number 4,651,627
- Issue date Mar 24, 1987
- Hytork Actuators Limited
- Duncan R. Stewart
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Pressure vessels having end closures and retainers
- Patent number 4,496,071
- Issue date Jan 29, 1985
- Valve Conversions Limited
- Duncan R. Stewart
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...