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Patent:US2243228


Patent:US 2243228
Title:Bookkeeping machine
Date:27.05.1941
Place:Rockford, IL und New York
Country:USA
Person:Sundstrand, Oscar (P)
Company:Underwood Elliott-Fisher (P) Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US2243228 (espacenet),  US2243228 (uspto)


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