Drilldown: Patents
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Patents > Inventors :
Bruce Hofer or
Phil Crosby or
Thomas S. Buzak
& Filing date:
1992
& Grant date:
1990 - 1999
& Cites :
... or
Patent US 2922074A or
Patent US 3215948A or
Patent US 3629731A or
Patent US 3689752A or
Patent US 4150420A
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