c: &3, empowers a patentee (with the fiat of the attorney general) to enter a disclaimer (q. v.) or 2 memorandum of an alteration in the title or specification of the patent, not being of such a nature as to extend the exclusive right granted by the patent, and thereupon the memorandum is deemed to be part of the letters patent or the specification. Sweet.—Memorandum of tion. A document to be subscrib-