The Patent System and the modern economy 

 - V, 77 S. 
 - Study of the subcommittee on patents  2 .
 - Study of the subcommittee on patents, trademarks, and copyrights of the committee on the judiciary, United States Senate  2 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>USA<br/>Patentwesen<br/>Wirtschaft