Number | Date | Country | Kind |
---|---|---|---|
934871 | Nov 1993 | FIX |
Number | Name | Date | Kind |
---|---|---|---|
3745349 | Liston | Jul 1973 | |
4423739 | Passaro et al. | Jan 1984 | |
4772790 | Aldridge | Sep 1988 | |
4950900 | Takeuchi et al. | Aug 1990 | |
5056929 | Watanabe et al. | Oct 1991 | |
5150969 | Goldberg et al. | Sep 1992 | |
5223716 | Rossiter | Jun 1993 |
Number | Date | Country |
---|---|---|
222993 | May 1987 | EPX |
9103204 | Mar 1991 | WOX |
9105240 | Apr 1991 | WOX |
9118279 | Nov 1991 | WOX |
9309413 | May 1993 | WOX |
Entry |
---|
Johnston, "Gas Monitors Employing Infrared LED's", Meas. Science & Technology, Mar.(1992) pp. 191-195, UK. |