Number | Name | Date | Kind |
---|---|---|---|
4618853 | Yuchi | Oct 1986 | |
4658243 | Kimura et al. | Apr 1987 | |
4692750 | Murakami et al. | Sep 1987 | |
4725819 | Sasaki et al. | Feb 1988 | |
4796025 | Farley et al. | Jan 1989 | |
4916432 | Tice et al. | Apr 1990 | |
4988977 | Payne et al. | Jan 1991 |
Entry |
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Fenwalnet 4000.TM. (Dec. 1988) "The Smartest Fire Alarm System". |