Drilldown: Patents
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Patents > Company :
Audio Precision or
Dubner Computer Systems, Inc. or
Tektronix Inc or
The Grass Valley Group, Inc.
& Filing date:
1982
& Grant date:
1980 - 1989
& Cites :
Patent US 3293474A or
Patent US 3430093A or
Patent US 3531675A or
Patent US 3740539A or
Patent US 4150420A
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Showing below up to 1 result in range #1 to #1.