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US2338878A
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Means for supporting the masks in printing rollers
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US2338877A
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Clamp for roller printing
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US2333251A
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Method of and means for reproducing designs
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US2325135A
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Printing member
|
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US2178118A
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Method of producing bleed line by diffusion of light
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US2275589A
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Method of creating marginally reduced reproductions of design elements
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US2175194A
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Method of establishing bleed lines on printing surfaces
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US2216882A
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Method of establishing bleed lines on printing surfaces
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US2229014A
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Production of printing surfaces by photomechanical methods
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US2191483A
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Means for creating a marginally reduced reproduction of a design
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US2376596A
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Method and means for producing intaglio printing elements
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CA403811A
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Photo-mechanical reproduction of design elements
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CA394832A
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Engraving means for printing surfaces
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CA393956A
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Marginal design reproduction
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