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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2326413


Patent:US 2326413
Title:Harmonic Calculator
Date:10.08.1943
Place:
Country:USA
Person:Thompson, George (P)
Company:
Internal Links:Musik
Keywords:
Link to the patent office:
(without guarantee)
 US2326413 (espacenet),  US2326413 (uspto)


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Aus der Patentschrift US2326413