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William F. Semple

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1

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1869

consumer_electronics

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1

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1 patents, in 1869

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18691870

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US 98304·1869

William Semple's 1869 Patent for Improved Chewing Gum

An 1869 patent by William Semple describing a method for creating chewing gum using rubber and other additives to make a long-lasting, chewable substance.

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