Patent:JP7248719

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Patent:JP 7248719
Title:Game Type Abacus Training Card
Date:26.09.1995
Place:
Country:Japan
Person:Ishii Yasuo
Company:
Internal Links:Kugelrechner, Lehrmittel
Keywords:
Link to the patent office:
(without guarantee)
 JP7248719 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=JP7248719)


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