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Patent:US2230673


Patent:US 2230673
Title:Multiplying and checking machine
Date:04.02.1941
Place:Ridgewood, NJ
Country:USA
Person:Robert Blakely Arthur H. Dickinson
Company:IBM (P)
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Keywords:
Link to the patent office:
(without guarantee)
 US2230673 (espacenet),  US2230673 (uspto)


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