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Patent:US3157353


Patent:US 3157353
Title:Calculating Machines
Date:17.11.1964
Place:
Country:USA
Person:Toorell, Sture (P)
Company:Facit (P)
Internal Links:reversing motion of rotor assembly in rotary calculator
Keywords:
Link to the patent office:
(without guarantee)
 US3157353 (espacenet),  US3157353 (uspto)


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Aus der Patentschrift US3157353