Number | Name | Date | Kind |
---|---|---|---|
426869 | Simon | Apr 1890 | |
1053650 | Saalburg | Feb 1913 | |
3222986 | Altman | Dec 1965 | |
3363506 | Altman | Jan 1968 | |
3690240 | Gold | Sep 1972 | |
3926509 | Davies et al. | Dec 1975 | |
4006971 | Plummer | Feb 1977 | |
4636050 | Tohata et al. | Jan 1987 | |
4717248 | LaRussa | Jan 1988 |
Number | Date | Country |
---|---|---|
2724845 | Dec 1978 | DEX |
132907 | Nov 1978 | DDX |
Entry |
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An Article, R. E. Hopkins, pub. Optical Engineering Design, Dec. 1988, vol. 23, No. 12, pp. 1019-1026. |
W. T. Plummer, Applied Optics, Jan. 1982, vol. 2, No. 2. |
Display Systems Engineering, published by McGraw-Hill, 1968. |