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Patent:US1910738


Patent:US 1910738
Title:Locking and Clearing Mechanism for Calculating Machines
Date:23.05.1933
Place:
Country:USA
Person:Avery, Harold (P)
Company:Marchant (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1910738 (espacenet),  US1910738 (uspto)


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Aus der Patentschrift US1910738