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22 juill. 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.

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History of printing

ByDemoye
16 oct. 2017
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0
502

Date:

22 juill. 1869
Maintenaint
~ Il y a 156 ans
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