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Patent:US4307649


Patent:US 4307649
Title:Slide Rule for fretted musical instrument
Date:29.12.1981
Place:
Country:USA
Person:Arthur Amos
Company:
Internal Links:Musik, Rechenschieber
Keywords:
Link to the patent office:
(without guarantee)
 US4307649 (espacenet),  US4307649 (uspto)


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Aus der Patentschrift US4307649