Number | Name | Date | Kind |
---|---|---|---|
1541004 | Taylor | Jun 1925 | |
1860627 | Sherman | May 1932 | |
2496810 | Nerrie | Feb 1950 | |
2751634 | Washington | Jun 1956 | |
3315376 | Nielsen | Apr 1967 | |
3592469 | Glass et al. | Jul 1971 | |
4114307 | Liebeskind | Sep 1978 | |
5172534 | Milner et al. | Dec 1992 |
Number | Date | Country |
---|---|---|
535765 | Dec 1958 | BEX |
123615 | Mar 1919 | GBX |
Entry |
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Booklet entitled: "Rubik's Snake", OddzOn Products, Inc. 1995. |
Before 1950--Wooden Carpenter's Ruler. |