inventor, according to the allegations and suggestions of the said
petition. In Testimony whereof I have caused these Letters to be made
patent, and the Seal of the United States to be hereunto affixed. Given
under my hand, at the City of Philadelphia, this twenty-third day of
February, in the year of our Lord one thousand seven hundred and
ninety-two, and of the Independence of the United States of America the
Sixteenth. Go. WASHINGTON.

By the President,

TH. JEFFERSON.


CITY OF PHILADELPHIA, February 23, 1792.

I do hereby certify that the foregoing Letters-patent were delivered to
me in pursuance of the Act intitled an Act to promote the progress of
useful arts: that I have examined the same, and find them conformable to
the said Act.

EDM. RANDOLPH,

_Attorney-General of the U.S._

[SEAL.]

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