Chapter 143. to confirm the term, for the period of seventeen years from the date of its original grant of the patent of Thomas A
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CHAP. 143.— An Act to confirm the term, for the period of seventeen years from the date of its original grant of the patent of Thomas A. Weston.May 27, 1878. *Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled*,Thomas A. Weston’s patent; term of. That the patent for improvement in pulleys, number sixty-seven thousand four hundred and seventy, granted to Thomas A. Weston, August, sixth, eighteen hundred and sixty-seven, for the term of seventeen years from that date, and reissued number four thousand nine hundred and seventy one, July ninth, eighteen hundred and seventy-two, shall be deemed to be, and the same is hereby declared, to be in full force and effect for the term of seventeen years from the date of its original grant, namely, August sixth, eighteen hundred and sixty-seven, according to the terms expressed in said original grant: *Provided*, uoone shall beheld liableforanyinfringementofthe*Proviso.* patent during the period from the date of its lapse to the passage of this act, or for the use or sale hereafter of any specific machine covering any devices embracing the patented invention made within that period.
Approved, May 27, 1878.