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Patent:US1961053


Patent:US 1961053
Title:Pocket Calculating Machine
Date:20.08.1931
Place:Berlin
Country:USA
Person:Kübler, Carl
Company:Addiator (P)
Internal Links:Addiator Negativ, Zahlenschieber
Keywords:
Link to the patent office:
(without guarantee)
 US1961053 (espacenet),  US1961053 (uspto)


Erteilt: 29.5.1934
Prio: 21.8.1930 (DE)

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