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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2175621


Patent:US 2175621
Title:Totalizer for counting machines
Date:10.10.1939
Place:West Hartford, CT
Country:USA
Person:Anton Van Veen
Company:Denominator Comp.
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2175621 (espacenet),  US2175621 (uspto)


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