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Patent:US1508267


Patent:US 1508267
Title:Overdraft key-locking and indicating mechanism for calculating machines
Date:09.09.1924
Place:
Country:USA
Person:Bernau, Frederick (P)
Company:Ellis (P) Adding Typewriter Compan
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1508267 (espacenet),  US1508267 (uspto)


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Aus der Patentschrift US1508267