Alphabetical Index Index by Year of Birth
Joseph Hardtmuth
* 1758 Asparn an der Zaya, Austria
+ 1816 Vienna
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Joseph Hardtmuth was a successful Austrian architect, inventor and entrepreneur.
In 1792, Hardtmuth established a pencil factory in Vienna after he succeeded
in creating an artificial graphite pencil by mixing powdered graphite with clay.
2021 J. Giesen