Inventor
STEWART JOHN KENNETH
6 patents
Patents
6 patentsUS4083775AApr 11, 1978
Ballast cleaner
CANRON INC8 citations72
US4048353ASep 13, 1977
Method of drilling and injecting perservative fluid into railway ties
CANRON INC11 citations72
US3952665AApr 27, 1976
Device for laterally displacing a railroad track
CANRON INC10 citations72
US3967395AJul 6, 1976
Crossing undercutter and switch undercutter mounted on tractor-type vehicle
CANRON INC18 citations71
US3965822AJun 29, 1976
Shoulder tamping lifting jack
CANRON INC12 citations71
US4026034AMay 31, 1977
Needle indicator for rail liner
CANRON INC4 citations60