United States Patent Law Sesquicentennial Celebration :  a record of the proceedings commorating the 150. anniversary of the signing of the 1. United States Patent Law ; 1790 - 1950 

 - VII, 72 S. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>USA<br/>Patentgesetz<br/>Festschrift<br/>Patentwesen