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22 lugl 1869 anni - Hectograph (A.K.A Jellygraph/Gelatin Duplicator) was invented

Descrizione:

A printing process that transfers something prepared with a special ink, to a pan of gelatin.

Aggiunto al nastro di tempo:

History of printing

16 ott 2017

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502

Data:

22 lugl 1869 anni

Adesso

~ 156 years ago

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