File:Pat1740079.pdf

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Pat1740079.pdf ‎(file size: 285 KB, MIME type: application/pdf)

Thomas Edison Patent: "Extraction of Rubber from Plants" (1929)

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current11:19, 22 January 2011 (285 KB)Rasmus (talk | contribs)Thomas Edison Patent: ''"Extraction of Rubber from Plants"'' (1929)

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