Drilldown: Patents

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Patents > Inventors : John Kobbe or Linley Gumm or Phil Crosby & Filing date: 1960 - 1969 & Cites : Patent US 2280531A or Patent US 2922074A or Patent US 3214516A or Patent US 3312850A or Patent US 3689752A or Patent US 4322688A or None

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