William David Coolidge was born in Hudson, Massachusetts, the son of a farmer and a dressmaker. As a young boy, he worked in a shoe factory to help support his family. After attending public schools, ...
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William D. Coolidge was an American physical chemist and inventor who made important contributions to three areas of twentieth-century technical development. He developed a pliable filament that impro...
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William Coolidge
William D. Coolidge