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- 1781 - René-Théophile-Hyacinthe Laennec - physician and inventor of the stethoscope (1816). The stethoscope was not immediately accepted by many doctors at the time including the head of the American Heart Association. The first stethoscope only had one ear piece.
- 1792 - Karl Ernst von Baer - Baltic German biologist and a founding father of embryology. Interestingly, Baer opposed many of the ideas of Charles Darwin.
- 1890 - Christopher Sholes, who with Carlos Glidden and Samuel Soule, invented the first practical type writing machine -- an alternative means to produce written communication for people who have trouble writing by hand.
- ↑ http://findarticles.com/p/articles/mi_m0689/is_n2_v37/ai_13248765
- ↑ The Great Idea Finder- Typewriter Accessed March 5, 2008.