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Patent:US2229764


Patent:US 2229764
Title:Calculating machine
Date:28.01.1941
Place:Detroit
Country:USA
Person:Muller, Robert (P)
Company:Burroughs (P) Adding Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US2229764 (espacenet),  US2229764 (uspto)


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