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Start Over You searched for: Subject Patents Remove constraint Subject: Patents Year 1800 to 1849 Remove constraint Year: <span class="from" data-blrl-begin="1800">1800</span> to <span class="to" data-blrl-end="1849">1849</span>

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The Historical and Interpretive Collections of The Franklin Institute collection of oversized papers, 1790-1984 (inclusive)

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]

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William Pybus book of recipes, remedies, and experiments, 1815-1816 (inclusive)

Held at: University of Pennsylvania: Kislak Center for Special Collections, Rare Books and Manuscripts [Contact Us]

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The Historical and Interpretive Collections of The Franklin Institute subject files, 1792-1943 (inclusive)

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]