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Scientific American

April 29, 1911

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The Inventor's Department - April 29, 1911

Simple Patent Law; Patent Office News; Inventions New and Interesting

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This article was originally published with the title “The Inventor's Department” in Scientific American Magazine Vol. 104 No. 17 (April 1911), p. 433
doi:10.1038/scientificamerican04291911-433

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