Writ of Certiorari Denied May 13, 1946. See 66 S.Ct. 1025.
GARRECHT, Circuit Judge.
The two Heath patents in suit were issued to appellant to cover the use of cellophane and pliofilm as protective sheets for stencils. Before cellophane was used as a protective sheet, mere outlines were all that could be made on duplicating stencils with the stylus by anyone other than an expert without weakening the structure of the stencil. Without cellophane, the stylus...
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