Assignee
FRIESEN DAVID
4 granted patents·38 citations·filing 1978–1989
Top patents by PatentIndex Score
4 records- 0159US4970849ASwath pick-up for a combine harvesterFRIESEN DAVID·Filed 1989·Granted Nov 20, 1990·19 cites·19 claims
- 0241US5006135ASelf cleaning screenFRIESEN DAVID·Filed 1989·Granted Apr 9, 1991·10 cites·8 claims
- 0333US4498278AHarvester swath pick-up driveFRIESEN DAVID·Filed 1983·Granted Feb 12, 1985·5 cites·14 claims
- 0433US4129978AHarvester swath pickupFRIESEN DAVID·Filed 1978·Granted Dec 19, 1978·4 cites·2 claims
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