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Date Created1905
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Date Created1905
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Date Created1898
DescriptionEdison Manufacturing Company.
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Date Created1991-08-13
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DescriptionEdison cautery batteries were specially designed to meet the large and increasing demand of physicians and surgeons for a reliable battery capable of furnishing a very heavy current for cautery work. ...
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DescriptionThomas Edison began serious research into developing a practical incandescent lamp in 1878. Edison filed his first patent application for "Improvement In Electric Lights" on 14 October 1878. After...
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Date Created1905