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Patent:US4048731


Patent:US 4048731
Title:Educational game apparatus
Date:20.09.1977
Place:C/O Lady Minto Hospital, Box 4000, 8th
Country:USA
Person:Baguioro, Anastasia
Company:
Internal Links:Lehrmittel
Keywords:
Link to the patent office:
(without guarantee)
 US4048731 (espacenet),  US4048731 (uspto)


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Aus der Patentschrift US4048731