Drilldown: Patents
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Patents > Inventors:
Francis A. Witek 
& Company:
The Grass Valley Group, Inc.
& Grant date:
1980 - 1989
& Company:
The Grass Valley Group, Inc.
& Grant date:
1980 - 1989 Use the filters below to narrow your results.
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Showing below up to 1 result in range #1 to #1.