Number | Name | Date | Kind |
---|---|---|---|
D100761 | Elkonin | Aug 1936 | |
298557 | Diolot | May 1884 | |
2999326 | Musaphia | Sep 1961 | |
4568287 | Wederski | Feb 1986 | |
5751662 | Shaw | May 1998 |
Entry |
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Fernekes, Leo M., "Virtual Image Clock," advertising brochure, May, 1997, New York, New York. |