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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US1302590


Patent:US 1302590
Title:Angle calculator
Date:06.05.1919
Place:Elmira, NY
Country:USA
Person:Reazor, Jr., William N.
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1302590 (espacenet),  US1302590 (uspto)


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