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Patent:US2219737


Patent:US 2219737
Title:Calculating Machine
Date:29.10.1940
Place:
Country:USA
Person:Bryce, James (P), Dickinson, Arthur (P)
Company:IBM (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2219737 (espacenet),  US2219737 (uspto)