Drilldown: Patents

Patents > Inventors : Bruce Hofer or Bruce J. Penney or John Addis or Linley Gumm or Phil Crosby or Richard A. Jackson or Val Garuts & Filing date: 1972 & Cites : Patent GB 460562A or Patent US 3293474A or Patent US 3331983A or Patent US 3413513A or Patent US 3426237A or Patent US 3531675A or Patent US 3725792A or Patent US 4146844A or Patent US 4255003A or None

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