Drilldown: Patents
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Patents > Inventors :
George Frye or
John Kobbe or
Linley Gumm or
Phil Crosby
& Filing date:
1970 - 1979
& Grant date:
1974
& Cites :
Patent GB 460562A or
Patent US 2883619A or
Patent US 3293474A or
Patent US 3413513A or
Patent US 4150420A
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