OCR Text |
Show Renewal of Patent Patents may be renewed only by I act of congress, a thing practically unheard of. Patenting of an to-provement to-provement does not extend the life-of life-of a patent. At the end of 17 yean ' after grant of a patent, the tn-' tn-' vention passes into public domain and may be made, used or sold by anyone, incorporating every feature fea-ture disclosed in the patent. Sixty-1 Sixty-1 five to 75 per cent of the functional func-tional components of the modern' ! motor vehicle have originated with independent inventors and are made complete by independent smaller manufacturers. |