Invention or Discovery: Rotary 3-Color Press
Invention: Rotary 3-color printing-press (multi-color)Date: 1743
Inventor: Platt & Keen
Birthplace: England
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| Invention or Discovery: Rotary 3-Color PressInvention: Rotary 3-color printing-press (multi-color)Date: 1743 Inventor: Platt & Keen Birthplace: England
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