Number | Name | Date | Kind |
---|---|---|---|
3387134 | Treharne | Jun 1968 | |
3518654 | Vassil | Jun 1970 | |
3768059 | Day | Oct 1973 | |
3896423 | Lindberg | Jul 1975 | |
4486743 | Brown | Dec 1984 | |
4722612 | Junkert et al. | Feb 1988 | |
4863279 | Markel et al. | Sep 1989 | |
5103916 | McLelland | Apr 1992 | |
5254975 | Torikoshi | Oct 1993 |
Entry |
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System Sensor Brochure, "Fire Safety Devices," pp. 1-6 and 20 (back cover) (1993). |