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Patent:US2456676


Patent:US 2456676
Title:Slide Indicator Rule
Date:21.12.1948
Place:
Country:USA
Person:Chowns, W. C. (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2456676 (espacenet),  US2456676 (uspto)


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Aus der Patentschrift US2456676