Number | Date | Country | Kind |
---|---|---|---|
7705030 | Jun 1977 | NL |
Number | Name | Date | Kind |
---|---|---|---|
2103032 | Fritze et al. | Dec 1937 | |
2962616 | Homer et al. | Nov 1960 | |
3023340 | Repsher | Feb 1962 | |
3255373 | Broekhoven et al. | Jun 1966 | |
3833827 | Shaffer | Sep 1974 | |
3875453 | Thornton, Jr. | Apr 1975 | |
3937998 | Verstegen et al. | Feb 1976 | |
3992645 | Kaduk | Nov 1976 |
Number | Date | Country |
---|---|---|
50-32960 | Oct 1975 | JP |
Entry |
---|
"Fluorescent Lamps and Lighting," by W. Elenbaas, 1962, Section 2.4 Preparation of Phosphors, pp. 23, 24, 25. |