Method of obtaining a viscous pyroxylin solution

Method of obtaining a viscous pyroxylin solution: No. 27634. ​​Supponent.04.10.1914.Issue 11/11/1914 / "E.I. Du Pont de Nemurs."- [B.M .: B. and., 1914].-[1] s .. -Description of the method of obtaining a viscous pyroxylin solution.The privilege of the Foreign Company "Powder Company E. Du Pont de Nemurs" (EJ Du Pont de Nemurs Powder Company), in Wilmington, in the North American state of Delver, declared on October 4, 1912 (og. St. No. 54670).Class 78C.No. 27634. ​​The privilege issued on December 11, 1914.I. "E.I. Dunt de Nemurs", a powder company (Wilmington, Delaver) .1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS