Number | Date | Country | Kind |
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3-25416[U] | Mar 1991 | JPX | |
3-43266[U]JPX | May 1991 | JPX |
Number | Name | Date | Kind |
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3957378 | Zipin | May 1976 | |
4074131 | Schwebel | Feb 1978 | |
4772835 | Weaver et al. | Sep 1988 | |
5026164 | Ichikawa | Jun 1991 |
Number | Date | Country |
---|---|---|
1-272917 | Oct 1989 | JPX |
1513898 | Jun 1978 | GBX |
2034880 | Jun 1980 | GBX |
Entry |
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John T. Winthrop et al.; Theory of Fresnel Images. I. Plane Periodic Objects in Monochromatic Light; Journal of the Optical Society of America; vol. 55, No. 4, Apr. 1965, pp. 373-381. |