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  1. William Addis (entrepreneur) - Wikipedia

  2. 你知道“现代牙刷之父”William Addis吗? - 知乎专栏

  3. A Visual History of the Toothbrush | Museum of Every Day Life

  4. Who invented the toothbrush and when was it invented?

  5. Who invented the toothbrush? - HISTORY

  6. William Edward Addis Inventor of Toothbrush - Researchpedia

  7. Who Made That Toothbrush? - The New York Times

  8. Made up in Britain: Toothbrush : William Addis 1780

  9. William Addis (1734 — 1808) | World Biographical Encyclopedia

  10. Wiliam Addis, the Mass-Produced Toothbrush - 2016-04-01 - Forbes