Number | Name | Date | Kind |
---|---|---|---|
1896607 | Brunner | Feb 1933 | |
2861388 | Favaretto | Nov 1958 | |
3002315 | Kuhn | Oct 1961 | |
3205611 | Onanian | Sep 1965 | |
4057244 | Gaspar | Nov 1977 | |
4080752 | Burge | Mar 1978 | |
4619625 | Seki et al. | Oct 1986 | |
5078642 | Glessner | Jan 1992 |
Number | Date | Country |
---|---|---|
2048088 | Dec 1980 | GBX |
Entry |
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Kenner's "Hydro-Dynamic Building Set No. 11" Advertisement in Playthings, Jul. 1964. |