Drilldown: Patents
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Patents > Inventors :
Bruce J. Penney or
Dan Knierim or
John Addis or
Les Larson or
Linley Gumm
& Company :
Audio Precision or
Dubner Computer Systems, Inc. or
Tektronix
& Filing date:
1971
& Grant date:
1970 - 1979
& Cites :
... or
Patent US 3293473A or
Patent US 3293474A or
Patent US 3558930A or
Patent US 3725792A or
None
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