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AT52200B Expired / Lapsed AT ⏱️ 0.0 years remaining

Process for the production of photomechanical printing forms in which the areas of an exposed chromate layer that have been washed out by development print.

Assignee: Adolf Tellkampf
•
Filing: 1910-02-26
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Granted: 1912-02-10
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Expires: 1930-02-26
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Abstract

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Inventors

  • 👤 Adolf Tellkampf

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Data Source google_patents
Last Synchronized 2026-10-23 23:57
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