Inventor
FRIESEN DAVID
US8 patents
⚠️ This page may combine multiple inventors who share the name “FRIESEN DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FRIESEN DAVID
4 patentsUS5006135AApr 9, 1991
Self cleaning screen
FRIESEN DAVID10 citations71
US4970849ANov 20, 1990
Swath pick-up for a combine harvester
FRIESEN DAVID19 citations71
US4498278AFeb 12, 1985
Harvester swath pick-up drive
FRIESEN DAVID5 citations60
US4129978ADec 19, 1978
Harvester swath pickup
FRIESEN DAVID4 citations60