Process of preparing planographic printing plates
United States Patent 2598043

Inventors:
Eichner, Frank L.
Publication Date:
05/27/1952
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Assignee:
REYNOLDS METALS CO
Primary Class:
Other Classes:
204/210, 205/674, 430/278.100, 101/395, 101/459
International Classes:
B41N3/03
US Patent References:
2469237Electrolytic sealing of anodized aluminum surfaces
Foreign References:
GB467024A
GB504559A