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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2832530


Patent:US 2832530
Title:Value selecting and transmitting mechanism for listing adding machine
Date:29.04.1958
Place:
Country:USA
Person:Chall, Harold (P)
Company:Friden (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2832530 (espacenet),  US2832530 (uspto)


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