Number | Date | Country | Kind |
---|---|---|---|
49-120479 | Oct 1974 | JA |
Number | Name | Date | Kind |
---|---|---|---|
3578845 | Brooks et al. | May 1971 | |
3586412 | Leith | Jun 1971 | |
3708217 | McMahon | Jan 1973 | |
3941450 | Spitz et al. | Mar 1976 |
Number | Date | Country |
---|---|---|
2,041,922 | Mar 1972 | DT |
Entry |
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Richter et al., Applied Optics, vol. 13, No. 12, Dec. 1974, pp. 2924-2930. |