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1933-04-27 |
1935-04-09 |
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Advertising medium or toy
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1944-11-10 |
1947-06-04 |
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1947-11-21 |
1951-10-09 |
Zimmerman Harry |
Magnetic toy blocks
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1956-04-30 |
1958-06-24 |
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1956-08-09 |
1961-07-18 |
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Polymorphic geometrical devices
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1959-02-10 |
1963-07-02 |
Clarence T Dorsett |
Magnetic blocks
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1962-05-21 |
1966-06-07 |
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Magnetic toy building blocks
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Bausatz zum Bauen von aus Teilkoerpern zusammengesetzten Koerpern
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1968-08-28 |
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1972-05-16 |
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Polyhedral amusement and educational device
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1970-04-23 |
1972-02-29 |
Alexander Randolph |
Block construction
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1970-09-04 |
1971-11-09 |
Scient Demonstrators Inc |
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1970-11-20 |
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1972-07-26 |
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1977-11-29 |
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1978-08-15 |
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Folding puzzle
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1975-06-13 |
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1980-11-18 |
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Rubik Erno |
Form-construction toy
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1981-02-26 |
1982-09-15 |
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Connected-block puzzle
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USD264361S
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1981-04-01 |
1982-05-11 |
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Puzzle toy
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Calendar cube apparatus
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Puzzle
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Three dimensional geometric puzzle
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Set di blocchi con elementi magnetici di ancoraggio mobili per la costruzione di giochi
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Set di blocchi per la costruzione di giochi
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"rompecabezas formado por una pluradidad de cubos".
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車両用電源装置の電流検出装置
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立体パズル
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