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Patent:US3554074


Patent:US 3554074
Title:Stringed Instrument Teaching Device
Date:12.01.1971
Place:
Country:USA
Person:James C. Rickey
Company:
Internal Links:Lehrmittel, Musik
Keywords:
Link to the patent office:
(without guarantee)
 US3554074 (espacenet),  US3554074 (uspto)


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Aus der Patentschrift US3554074