Amdur, Leon H. <br/><br/>
Patent fundamentals  by Leon H. Amdur. 

 - New York  Chemical Publishing  1941 
 - 305p., 80 pict. 20cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Patents Trademarks. 
<br/><br/><label>Dewey Class. No.: </label>608  / A42P