Inventor
KRUPPA ROBERT W
US9 patents
Patents
9 patentsUS5613783AMar 25, 1997
Point of sale printer with magnetic reader
IBM46 citations95
US5893667AApr 13, 1999
Point of sale printer with magnetic reader
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US5887075AMar 23, 1999
Method, and apparatus and article of manufacture for filtering periodic noise from a magnetic read head
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US5634729AJun 3, 1997
Magnetic reader with a flexible pressure film pressure pad
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US5805439ASep 8, 1998
DC-to-DC auto switch circuit
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US5087867AFeb 11, 1992
Motor driving apparatus and printer
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US7492974B2Feb 17, 2009
Gray scale image cleaning system and method
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Logic array structure for depletion mode-FET load circuit technologies
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US7952775B2May 31, 2011
Gray scale image cleaning system and method
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