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Patent:US2403273


Patent:US 2403273
Title:Calculating Machine
Date:02.07.1946
Place:
Country:USA
Person:Friden, Carl Mauritz Fredrick (P) et al
Company:Friden (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2403273 (espacenet),  US2403273 (uspto)


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