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    • Briggs, Isaac
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    • 1802-10-11

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11 October 1802, Baltimore. “I take the liberty of sending for deposit in thy office, as evidence of another invention of my brother Samuel, the enclosed Specification and affirmation. After fully submitting it to the test of experiment, he intends, if it succeeds, to solicit a patent.” Requests an acknowledgment of this letter “directed to Brookeville, Maryland.” Letterbook copy and copy of...