Drilldown: Patents

Patents > Inventors : Bozidar Janko or Linley Gumm or Phil Crosby & Filing date: 1980 - 1989 & Grant date: 1989 & Cites : Patent US 3214631A or Patent US 3331983A or Patent US 3358159A or Patent US 3531675A or Patent US 3629731A or Patent US 4146844A or Patent US 4322688A or None

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