Drilldown: Patents

Patents > Inventors : Bruce Hofer or Cornelis Teunis Veenendaal or Hiro Moriyasu or Les Larson or Phil Crosby or Richard Cabot & Filing date: 1971 & Grant date: May 1972 & Cites : Patent US 2922074A or Patent US 3293474A or Patent US 3331983A or Patent US 3426236A or Patent US 3689752A or Patent US 4322688A or None

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