Number | Name | Date | Kind |
---|---|---|---|
3141612 | Bolton | Jul 1964 | |
4000400 | Elder | Dec 1976 | |
4263585 | Schaefer | Apr 1981 | |
4303851 | Mottier | Dec 1981 | |
4342987 | Rossin | Aug 1982 | |
4346427 | Blisset et al. | Aug 1982 | |
4523095 | Keller-Steinbach | Jun 1985 | |
4612442 | Toshimichi | Sep 1986 | |
4745284 | Masuda et al. | May 1988 |
Number | Date | Country |
---|---|---|
0235327 | Sep 1987 | EPX |
0131884 | Oct 1980 | JPX |
557069 | Dec 1972 | CHX |
Entry |
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F. Schwartz, "Performance of Narrow Field, Passive, Infra-Red Intrusion Detector", Proceedings of The Society of Photo-Optical, Sep. 1972, pp. 51-56. |