Frank D. Ruble

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Hayward, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Control apparatus for serial printer
- Patent number 4,103,766
- Issue date Aug 1, 1978
- Xerox Corporation
- Frank D. Ruble
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Control apparatus for serial printer
- Patent number 4,091,911
- Issue date May 30, 1978
- Xerox Corporation
- Louis H. Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Hammer intensity selection apparatus for serial printer
- Patent number 4,037,208
- Issue date Jul 19, 1977
- Xerox Corporation
- Alfred G. Osterlund
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Velocity command signal generating apparatus
- Patent number 4,021,650
- Issue date May 3, 1977
- Xerox Corporation
- Frank D. Ruble
- G05 - CONTROLLING REGULATING