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Lester A. Neumann
US
US Patent 2,048,021, Apparatus for Casting Quads or Spacers [on a Thompson]
· 1936
US Patent 2,048,021, Apparatus for Casting Quads or Spacers [on a Thompson]
Lester A. Neumann
Foundry
Lester A. Neumann
Published
1936
Source
Internet Archive
Rights
Public domain
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US Patent 2,088,306, Base for Printing Plates
1937 · Lester A. Neumann
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