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Patent:US1302501


Patent:US 1302501
Title:Calculating Machine
Date:06.05.1919
Place:COYTESVILLE, NEW JERSEY USA
Country:USA
Person:Bontempi, Augustus
Company:THE BONTEMPI ARITHMO CORPORATION
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Link to the patent office:
(without guarantee)
 US1302501 (espacenet),  US1302501 (uspto)


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Aus der Patentschrift US1302501