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Patents for Politoys Ipari Szövetkezet | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 4,378,116 | Mar. 29, 1983 | E. Rubik | Spatial logical toy | |
![]() | 4,378,117 | Mar. 29, 1983 | E. Rubik | Spatial logical toy |