(July 19, 1952, ch. 950, 66 Stat. 813.) HISTORICAL AND REVISION NOTES Based on Title 35, U.S.C., 1946 ed., Secs. 74, 75 (Feb. 4, 1887, ch. 105, Secs. 1, 2, 24 Stat. 387, 388). Language is changed.