Robert W. Arnold

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Glen Aubrey, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Constant energy drive circuit for electromagnetic print hammers
- Patent number 4,408,129
- Issue date Oct 4, 1983
- International Business Machines Corporation
- Robert W. Arnold
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Constant energy drive circuit for electromagnetic print hammers
- Patent number 4,381,532
- Issue date Apr 26, 1983
- International Business Machines Corporation
- Robert W. Arnold
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Analog DC motor velocity control loop
- Patent number 4,218,641
- Issue date Aug 19, 1980
- International Business Machines Corporation
- Robert W. Arnold
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for adjusting the velocity of ink drops in an...
- Patent number 4,045,770
- Issue date Aug 30, 1977
- International Business Machines Corporation
- Robert Walker Arnold
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS