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Patent:US3960046


Patent:US 3960046
Title:Music Teaching Device
Date:01.06.1976
Place:Flat 14, 2 Grattan St., Hawthorn
Country:USA
Person:Choong, Alan Chong Seong
Company:
Internal Links:Lehrmittel, Musik
Keywords:
Link to the patent office:
(without guarantee)
 US3960046 (espacenet),  US3960046 (uspto)


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Aus der Patentschrift US3960046