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Patent:US1724231


Patent:US 1724231
Title:Adding and recording machine
Date:13.08.1929
Place:Rockford, IL und Wilmington, DE
Country:USA
Person:Sundstrand, Oscar (P)
Company:Sundstrand (P) Corp.
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Link to the patent office:
(without guarantee)
 US1724231 (espacenet),  US1724231 (uspto)


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