Inventor
CIRKOT DAVID M
US3 patents
Patents
3 patentsUS4698937AOct 13, 1987
Traffic responsive control system for automatic swinging door
STANLEY WORKS59 citations94
US4565029AJan 21, 1986
Traffic responsive control system for automatic swinging door
STANLEY WORKS67 citations94
US4669218AJun 2, 1987
Traffic responsive control system
STANLEY WORKS45 citations90