Robert A. Ragen

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Hayward, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for controlling the positioning of marking ele...
- Patent number 4,893,950
- Issue date Jan 16, 1990
- Xerox Corporation
- Robert A. Ragen
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Rotary printing device with identifying means and method and appara...
- Patent number 4,428,694
- Issue date Jan 31, 1984
- Xerox Corporation
- Robert A. Ragen
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electronic damping apparatus
- Patent number 4,349,770
- Issue date Sep 14, 1982
- Xerox Corporation
- Robert A. Ragen
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Motion control apparatus
- Patent number 4,328,452
- Issue date May 4, 1982
- Xerox Corporation
- Robert A. Ragen
- G05 - CONTROLLING REGULATING
Information Patent Grant
Multi-pass matrix printing
- Patent number 4,242,003
- Issue date Dec 30, 1980
- Xerox Corporation
- Robert A. Ragen
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Font conversion apparatus
- Patent number 4,029,190
- Issue date Jun 14, 1977
- Xerox Corporation
- Robert A. Ragen
- G06 - COMPUTING CALCULATING COUNTING