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Patent:US2443750


Patent:US 2443750
Title:Adding Machine for Computing Bearing Angles
Date:22.06.1948
Place:
Country:USA
Person:Swigart, J. G. (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2443750 (espacenet),  US2443750 (uspto)


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