Compulsory licensing of patents. Hearings before the Committee on Patents, Subcommittee on Compulsory Licensing, House of Representatives, Seventy fifth Congress, third session, on H.R. 9259, H.R. 9815, H.R. 1666. March 21, 22, 23, 24, 25, 28, 29, 30, and 31, 1938.

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