Inventor
DOWNING HAROLD A
6 patents
Patents
6 patentsUS4084713AApr 18, 1978
Vehicle wheelchair ramp
COLLINS IND INC92 citations94
US4124130ANov 7, 1978
Safety barrier for a wheelchair lift
COLLINS IND INC36 citations91
US4062209ADec 13, 1977
Wheelchair lock
COLLINS IND INC34 citations91
US4214849AJul 29, 1980
Retractable rail for a vehicle lift
COLLINS IND INC47 citations90
US4138023AFeb 6, 1979
Vehicle wheelchair lift
COLLINS IND INC17 citations72
US4113121ASep 12, 1978
Pin release device for a wheelchair lift
COLLINS IND INC12 citations71