William A. Patterson

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Durham, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Taut band piezoelectric actuator for wire matrix printing elements
- Patent number 4,929,100
- Issue date May 29, 1990
- International Business Machines Corp.
- William A. Patterson
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electromagnetic hammer actuator for impact printer
- Patent number 4,768,892
- Issue date Sep 6, 1988
- International Business Machines Corporation
- Douglas S. Brown
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Spring mounted torsionally rigid print hammer mechanism
- Patent number 4,421,025
- Issue date Dec 20, 1983
- International Business Machines Corporation
- William D. Thorne
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS