Chapter CCIX. to authorize the issuing of letters patent to Nathaniel Sylvester
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Chap. CCIX.— An Act to authorize the issuing of letters patent to Nathaniel Sylvester. May 26, 1824. *Be it enacted, &c., * Letters patent to be issued to him for his invention for preparing paper. That the Secretary of State be, and hereby is, authorized and required to issue letters patent, in the usual form, to Nathaniel Sylvester, for his invention of a new and useful preparation, for paper, to prevent frauds in bank checks and other writings, by ex- EIGHTEENTH CONGRESS. Sess.
I. Ch. 210, 211. 1824. 319 tracting the ink from the paper through chemical applications, upon his complying with all the provisions of the several acts of Congress relative to the issuing of letters patent for inventions and improvements, except so far as the said acts require, on the part of aliens, a residence of two years in the United States. Approved, May 26, 1824.