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Patent:US1395991


Patent:US 1395991
Title:Adding machine
Date:01.11.1921
Place:Detroit
Country:USA
Person:Malcolm F. Gascon
Company:Burroughs (P) Adding Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1395991 (espacenet),  US1395991 (uspto)


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