Drilldown: Patents

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Patents > Inventors : Art Metz or Bruce J. Penney or Les Larson or Linley Gumm or Phil Crosby or Val Garuts & Filing date: 1980 - 1989 & Cites : Patent US 2280531A or Patent US 2883619A or Patent US 3413513A or Patent US 3725792A or Patent US 3753170A or Patent US 4146844A or None

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