Context

Context of Contributory infringement in patents (Definition of invention ) : hearings before Subcommittee on Patents, Trade-marks, and Copyrights ... Eightieth Congress, second session, on H.R. 5988, a bill to provide for the protection of patent rights where enforcement against direct infringements is impracticable, to define "contributory infringement," and for other purposes; H.R. 4061, a bill to establish a criterion of invention with respect to patent applications and issued patents and to amend section 4886 of the revised stature and for other purposes; H.R. 5248, a bill to declare the national policy regarding the test for determining invention. May 5, 7, and 12, 1948
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