Drilldown: Patents

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Patents > Inventors : Dan Knierim or Phil Crosby or Richard A. Jackson or Thomas S. Buzak & Filing date: August 1988 & Grant date: July 30, 1991 & Cites : Patent US 2883619A or Patent US 3331983A or Patent US 3413513A or Patent US 3531675A or Patent US 3629731A or Patent US 3689752A or Patent US 4146844A or Patent US 4150420A or None & Links : 7A24 or T7840 or None

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