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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2585578


Patent:US 2585578
Title:Decimal indicator
Date:12.02.1952
Place:Chicago
Country:USA
Person:Niemann, Frederick (P)
Company:Felt und Tarrant (P) Mfg. Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US2585578 (espacenet),  US2585578 (uspto)


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