Number | Name | Date | Kind |
---|---|---|---|
3539379 | Mayer | Nov 1970 | |
4599251 | Feller | Jul 1986 | |
4793864 | Neumiller et al. | Dec 1988 | |
5054902 | King | Oct 1991 |
Number | Date | Country |
---|---|---|
265718 | Oct 1968 | AT |
346666 | Jul 1960 | CH |
410498 | Oct 1966 | CH |
24 44 705 A1 | Apr 1976 | DE |
37 08 171 A1 | Sep 1988 | DE |
Entry |
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Optics, pp. 376-377 © 1987 Addison-Wesley. |