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Patent:US1907724


Patent:US 1907724
Title:Calculating Machine
Date:09.05.1933
Place:
Country:USA
Person:Bower Raymond G
Company:Burroughs (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1907724 (espacenet),  US1907724 (uspto)


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Aus der Patentschrift US1907724