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Patent:US2256011


Patent:US 2256011
Title:Drafting Instrument
Date:16.09.1941
Place:
Country:USA
Person:J. McK. Ballou
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2256011 (espacenet),  US2256011 (uspto)


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Aus der Patentschrift US2256011