Siemensﾠ developedﾠ theﾠ Phonophor, the firstﾠ Technicalﾠ solutionﾠ forﾠ hearing ﾠloss
In 1878, Siemens, now Sivantos,ﾠdevelopedﾠ the ﾠPhonophor, the first ﾠtechnicalﾠ solutionﾠ for ﾠhearing ﾠloss. The history of electrical…
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James Edward Hanger becomes the first amputee of the American Civil War
On Jun. 3, 1861, James Edward Hanger becomes the first amputee of the American Civil War. By the…
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The first U.S. patent was signed by President George Washington
On Jul. 31, 1790, the inventor Samuel Hopkins was awarded the first U.S. patent for a new method…
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Spectacles were invented
In 1285, spectacles were invented in Italy using convex lenses for the farsighted. The “Glasses Apostle” painting in…
