Drilldown: Patents
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Patents > Inventors :
John Kobbe or
Linley Gumm or
Phil Crosby
& Grant date:
1988
& Cites :
Patent US 2280531A or
Patent US 2922074A or
Patent US 4150420A or
Patent US 4322688A or
None
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Showing below up to 3 results in range #1 to #3.