Drilldown: Patents
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Patents > Inventors 
:
Bruce Hofer or
Dan Knierim or
Gene Andrews or
Phil Crosby
& Company :
Audio Precision or
Tektronix Inc or
None
& Filing date:
1967
& Grant date:
1970 - 1979
& Cites :
Patent US 2883619A or
Patent US 2922074A or
Patent US 3413513A or
Patent US 3531675A or
Patent US 3629731A or
Patent US 4146844A or
None
:
Bruce Hofer or
Dan Knierim or
Gene Andrews or
Phil Crosby
& Company :
Audio Precision or
Tektronix Inc or
None
& Filing date:
1967
& Grant date:
1970 - 1979
& Cites :
Patent US 2883619A or
Patent US 2922074A or
Patent US 3413513A or
Patent US 3531675A or
Patent US 3629731A or
Patent US 4146844A or
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