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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US1856039


Patent:US 1856039
Title:Integrating Mechanism for Metering Instruments
Date:26.04.1932
Place:
Country:USA
Person:T. R. Harrison
Company:
Internal Links:Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 US1856039 (espacenet),  US1856039 (uspto)


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Aus der Patentschrift US1856039