John D. Ward

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Altadena, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Auto feed system for compressed propellant tools and pressure compe...
- Patent number 6,709,315
- Issue date Mar 23, 2004
- John D. Ward
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Hydraulic power equipment
- Patent number 4,368,775
- Issue date Jan 18, 1983
- John D. Ward
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Retrofitting methods and retrofitted hydraulic drives
- Patent number 4,324,275
- Issue date Apr 13, 1982
- John D. Ward
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Cutting saw and concrete groover
- Patent number 4,236,356
- Issue date Dec 2, 1980
- John D. Ward
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Grant
Machine rails and carriages
- Patent number 4,184,719
- Issue date Jan 22, 1980
- John D. Ward
- B28 - WORKING CEMENT, CLAY, OR STONE