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April 1, 2024
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jul 22, 1869 - Hectograph (A.K.A Jellygraph/Gelatin Duplicator) was invented
Description:
A printing process that transfers something prepared with a special ink, to a pan of gelatin.
Added to timeline:
16 Oct 2017
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History of printing
Date:
jul 22, 1869
Now
~ 154 years ago