Perbezaan antara semakan "Charles Goodyear"

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* [http://www.goodyear.com/corporate/history/history_story.html The Charles Goodyear Story]
* [http://todayinsci.com/G/Goodyear_Charles/GoodyearPatent240.htm Today in Science History] – Goodyear's U.S. Patent No. 240: Improvement in the Process of Divesting Caoutchouc, Gum-Elastic, or India-Rubber of its Adhesive Properties, and also of Bleaching the Same, and Thereby Adapting it to Various Useful Purposes.
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* {{Citation| last = Iles| first = George| year = 1912| title = Leading American Inventors| place =New York| publisher = Henry Holt and Company| url = https://archive.org/details/leadingamericani00ilesrich|pages=176–218}}
 
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