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Patent:US2158142


Patent:US 2158142
Title:Calculating machine
Date:16.05.1939
Place:"Detroit"" und 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)
 US2158142 (espacenet),  US2158142 (uspto)


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