Form and publication of amendment.
Section 27
SEC. 27. Form and publication of amendment.—Amendment or correction of a patent as provided in section twenty-five and twenty-six hereof; shall be accomplished by a certificate of such amendment or correction authenticated by the seal of the Office and signed by the Director, which certificate shall be attached to the patent if the patent has been returned to the Director. Notice of such amendment or correction shall be published in the Official Gazette, and copies of the patent furnished by the Office shall include a copy of the certificate of the amendment or correction.