Drilldown: Patents
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Patents > Inventors :
John Kobbe or
Linley Gumm or
Phil Crosby
& Filing date:
1973
& Grant date:
1970 - 1979
& Cites :
... or
Patent US 2883619A or
Patent US 3558930A or
None
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Showing below up to 2 results in range #1 to #2.