Today's post was written by Ruth Chan, Archivist at the National Archives at San Francisco. 1872 Patent for Francis C. Browns Improvement in Artificial Dentures. (NAID 177389417) The mid-19th century became known as the “era of false teeth for the masses.” Why? This was thanks to Charles Goodyear’s invention on vulcanized rubber - which was … Continue reading The Era of False Teeth for the Masses
