Patent Practices of the Tennessee Valley Authority :  Preliminary Report of the Subcommittee of Patents, Trademarks and Copyrights of the Committee on the Judiciary ; U.S Senate, 85. Congress, 2. Session persuant to S. res. 236 

 - VII, 23 S. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Patentwesen<br/>USA