Chapter CLIX. *amendatory of an Act to amend an Act entitled “An Act to promote the Progress of the Useful Arts,” approved March three, eighteen hundred and sixty-three.* June 25, 1864.1863, ch. 102
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Chap. CLIX.— An Act *amendatory of an Act to amend an Act entitled “An Act to promote the Progress of the Useful Arts,” approved March three, eighteen hundred and sixty-three.* June 25, 1864.1863, ch. 102.Vol. xii. p. 796. *Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled*, Final fees for patents not paid, may be paid within six months.Proviso. That any person having an interest in an invention, whether as the inventor or assignee, for which a patent was ordered to issue upon the payment of the final fee as provided in section three of an act approved March three, eighteen hundred and sixty-three, but who has failed to make payment of the final fee as provided by said act, shall have the right to make the payment of such fee, and receive the patent withheld on account of the non-payment of said fee, provided such payment be made within six months from the date of the passage of this act:
Provided, That nothing herein shall be so construed as to hold responsible in damages any persons who have manufactured or used any article or thing for which a patent, as aforesaid, was ordered to be issued. Approved, June 25, 1864.