Bennett William B. <br/><br/>
American patent system 

 - London  Kennikat Press London        1972 
 - vi,259p  cm. 
<br/><br/><label>Standard No.: </label>27,940 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Z73:2673, L2