Inventor

STOLLER SR DAVID A

US3 patents

Patents

3 patents

US4451188AMay 29, 1984

Coil car with shiftable trough assemblies

PORTEC INC43 citations90

US4444123AApr 24, 1984

Curved roof hooper car

PORTEC INC15 citations68

US4454823AJun 19, 1984

Bulk freight rail car with metallized interior surfaces

PORTEC INC9 citations66