Inventor
STEFFEN DAVID E
9 patents
Patents
9 patentsUS4555624ANov 26, 1985
High rate seed sensor
DICKEY JOHN CORP67 citations95
US4277833AJul 7, 1981
Planter population monitor
DICKEY JOHN CORP57 citations95
US4225930ASep 30, 1980
Planter population monitor
DICKEY JOHN CORP55 citations95
US4307390ADec 22, 1981
Corn and soybean sensor
DICKEY JOHN CORP29 citations92
US4166948ASep 4, 1979
Seed sensor
DICKEY JOHN CORP39 citations91
US3974377AAug 10, 1976
Solid state seed sensor
DICKEY JOHN CORP20 citations81
US4137529AJan 30, 1979
Calibrated tuneable monitor
DICKEY JOHN CORP14 citations73
US5819512AOct 13, 1998
Apparatus and method for sensing material build-up
DICKEY JOHN CORP12 citations68
US4262288AApr 14, 1981
Electronic disabling switch
DICKEY JOHN CORP4 citations54