Page:Copyright, Its History And Its Law (1912).djvu/193

 Unfortunately, the precedent of our copyright act of 1891 has since been followed in England in the patent and designs act of 1907, which provides (sec. 27) that a patent may be revoked after four years "on the ground that the patented article or process is manufactured or carried on exclusively or mainly outside the United Kingdom." Such a provision had been a feature of the patent laws of Germany, Canada and other countries, but it is new in British law and has evoked strong protest from American patentees, notwithstanding that it is parallel with our manufacturing provision with respect to copyrights.