General Revision and Amendment of the Patent Law: Hearing Before the Committee on Patents, House of Representatives, Seventy-second Congress, First Session, on H.R. 10152, H.R. 10153, H.R. 10154, H.R. 10155, H.R. 10156, H.R. 10157, H.R. 9448, H.R. 10741, H.R. 6677, H.R. 7428, H.R. 7245. March 30 and 31, 1932

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