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jan 20, 1923 - Spirit Duplicator (A.K.A Ditto Machine/ Banda Machine) was invented

Description:

A method invented by Wilhelm Ritzerfeld that was used throughout most of the 20th century. A Spirit Duplicator uses alcohol (hence the name 'Spirit' Duplicator) in the solvent that is used as 'ink' in this machine.

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History of printing

ByDemoye
16 Oct 2017
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Date:

jan 20, 1923
Now
~ 102 years ago
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