Box 4
Container
Contains 19 Results:
U.S. Patent #2,121,899 – Treatment of Cellulose Triacetate, 1935-1938, undated
File — Box: 4, Folder: 14
Dates:
1935-1938, undated
U.S. Patent #2,125,880 – Manufacture of Mixed Aliphato-Nitrocellulose and Products There-of, 1936-1938, undated
File — Box: 4, Folder: 15
Dates:
1936-1938, undated
U.S. Patent #2,175,103 – Manufacture of Cellulose Esters, 1936-1939, undated
File — Box: 4, Folder: 16
Dates:
1936-1939, undated
U.S. Patent #2,184,707 – Pressure Synthesis of Sulfuric Acid, 1935-1940, undated
File — Box: 4, Folder: 17-18
Dates:
1935-1940, undated
U.S. Patent #2,204,543 – Process for the Purification of Sulfur Dioxide-Containing Technical Gases Obtained from Roasting – File 1, 1932-1941, undated
File — Box: 4, Folder: 19-20
Dates:
1932-1941, undated
U.S. Patent #2,204,543 – Process for the Purification of Sulfur Dioxide-Containing Technical Gases Obtained from Roasting – File 2, 1937-1941
File — Box: 4, Folder: 21
Dates:
1937-1941
U.S. Patent #2,228,383 – Tobacco Smoke Filtering – File 1, 1936-1941, undated
File — Box: 4, Folder: 22
Dates:
1936-1941, undated
U.S. Patent #2,228,383 – Tobacco Smoke Filtering – File 2, 1939-1941, undated
File — Box: 4, Folder: 23
Dates:
1939-1941, undated
U.S. Patent #2,267,548 – Art of Extracting Oil from the Earth – File 1 (Folder 1 of 2), 1936-1945, undated
File — Box: 4, Folder: 24
Dates:
1936-1945, undated