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David P. Bortfeld
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Kendall Park, NJ, US
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last 30 patents
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Patent Grant
Variable pitch grooved label for video disc
Patent number
4,341,952
Issue date
Jul 27, 1982
RCA Corporation
Gunter John
G06 - COMPUTING CALCULATING COUNTING
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Patent Grant
Apparatus and method for reading an identifying label on an informa...
Patent number
4,292,511
Issue date
Sep 29, 1981
RCA Corporation
Philip M. Heyman
G06 - COMPUTING CALCULATING COUNTING