![Centric Business Systems - powered by UBEO on Twitter: "It's #NationalInventorDay! We'd like to say thank you to Johannes Gutenberg, the inventor of the moveable-type printing press, & Chester Carlson, the inventor Centric Business Systems - powered by UBEO on Twitter: "It's #NationalInventorDay! We'd like to say thank you to Johannes Gutenberg, the inventor of the moveable-type printing press, & Chester Carlson, the inventor](https://pbs.twimg.com/media/EQhR5WFXYAAHweD.jpg:large)
Centric Business Systems - powered by UBEO on Twitter: "It's #NationalInventorDay! We'd like to say thank you to Johannes Gutenberg, the inventor of the moveable-type printing press, & Chester Carlson, the inventor
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Johann Gutenberg printing press: Who invented printing? [inventors and inventions, history online] - YouTube
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