Number | Date | Country | Kind |
---|---|---|---|
82111975.7 | Dec 1982 | EPX |
Number | Name | Date | Kind |
---|---|---|---|
3235672 | Beguin | Feb 1966 | |
3237012 | Treffeisen | Feb 1966 | |
3244776 | Sheldon | Apr 1966 | |
4395775 | Roberts et al. | Jul 1983 | |
4520485 | Sugino et al. | May 1985 | |
4604520 | Pohl | Aug 1986 |
Number | Date | Country |
---|---|---|
2256425 | May 1974 | DEX |
Entry |
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Fitzgerald, "Self-Image and Enlarging Lens" IBM Tech. Discl. Bull., vol. 18, No. 12, May 1976, p. 4174. |