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Patent:US1885489


Patent:US 1885489
Title:Decimal and nondecimal adding and subtracting machine
Date:01.11.1932
Place:Rockford, Ill. und Wilmington
Country:USA
Person:Sundstrand, Oscar (P)
Company:Sundstrand (P) Corp.
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Link to the patent office:
(without guarantee)
 US1885489 (espacenet),  US1885489 (uspto)


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