Number | Name | Date | Kind |
---|---|---|---|
2338077 | Scribner | Dec 1943 | |
2595770 | Crossley et al. | May 1952 | |
3117302 | Cardarelli et al. | Jan 1964 | |
4020047 | Burland | Apr 1977 | |
4543622 | Menke et al. | Sep 1985 | |
4574269 | Miller | Mar 1986 | |
4591954 | Kawamura et al. | May 1986 | |
4620268 | Ferenc | Oct 1986 | |
4626966 | Bleiwas et al. | Dec 1986 | |
4896251 | Farel | Jan 1990 |
Entry |
---|
1989 Federal Signal Catalog Copyright 1988, pp. 1-3, 12, 13, 65, 66. |