Number | Name | Date | Kind |
---|---|---|---|
3550078 | Long | Dec 1970 | |
3831039 | Henschel | Aug 1974 | |
4162477 | Munkberg | Jul 1979 | |
4230992 | Munkberg | Oct 1980 | |
4234967 | Henschel | Nov 1980 | |
4463339 | Frick et al. | Jul 1984 | |
4704610 | Smith et al. | Nov 1987 | |
4734881 | Klein et al. | Mar 1988 | |
4914434 | Morgan et al. | Apr 1990 | |
4970439 | Stopa et al. | Nov 1990 | |
4972185 | Stopa et al. | Nov 1990 | |
4992790 | Montgomery | Feb 1991 | |
4994714 | Hoekman et al. | Feb 1991 | |
5014052 | Obeck | May 1991 |
Entry |
---|
"Traffic Signal Control Equipment: State of the Art", Dec. 1990, U.S. Dept. of Commerce, NTIS. |