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Patent:US2439025


Patent:US 2439025
Title:Slide Rule
Date:06.04.1948
Place:
Country:USA
Person:Sammons Gordon W
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2439025 (espacenet),  US2439025 (uspto)


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Aus der Patentschrift US2439025