Process of preparing planographic printing plates
United States Patent 2598043
Inventors:
Eichner, Frank L.
Publication Date:
05/27/1952
Assignee:
REYNOLDS METALS CO
Other Classes:
204/210, 205/674, 430/278.100, 101/395, 101/459
International Classes:
B41N3/03
US Patent References:
| 2469237 | Electrolytic sealing of anodized aluminum surfaces | | | |