Drilldown: Patents
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Patents > Inventors :
Barrie Gilbert or
Bruce J. Penney
& Grant date:
1970 - 1979
& Cites :
Patent US 3215948A or
Patent US 3312850A or
Patent US 3331983A or
Patent US 3689752A or
None
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Showing below up to 11 results in range #1 to #11.