Drilldown: Patents
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Patents > Inventors :
Cornelis Teunis Veenendaal or
Dan Knierim or
Phil Crosby
& Filing date:
1980 - 1989
& Grant date:
1989
& Cites :
Patent US 2883619A or
Patent US 3293474A or
Patent US 3331983A or
Patent US 3358159A or
Patent US 4146844A or
Patent US 4322688A
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