Number | Date | Country | Kind |
---|---|---|---|
48-117966 | Oct 1973 | JPX | |
48-117967 | Oct 1973 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2622221 | Beese | Dec 1952 | |
3211666 | McAllister | Oct 1965 | |
3647706 | Lagos | Mar 1972 | |
3670194 | Thornton, Jr. et al. | Jun 1972 | |
3858082 | Thornton, Jr. | Dec 1974 | |
3916245 | Dorf et al. | Oct 1975 |
Entry |
---|
Luminescence of Solids, by H. W. Leverenz, 1950, pp. 248, 249. |