Based on Title 35, U.S.C., 1946 ed., § 46 (R.S. 4896, amended (1) Feb. 28, 1899, ch. 227, 30 Stat. 915, (2) Mar. 3, 1903, ch. 1019, § 3, 32 Stat. 1225, 1226, (3) May 23, 1908, ch. 188, 35 Stat. 245).

The language has been considerably simplified.