Drilldown: Patents
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Patents > Inventors :
Bruce Hofer or
Bruce J. Penney or
George Frye or
Phil Crosby
& Filing date:
1980 - 1989
& Cites :
Patent US 3215948A or
Patent US 3293473A or
Patent US 3325673A or
Patent US 3629731A or
None
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Showing below up to 39 results in range #1 to #39.