International classification of patents for invention under the European Convention of 19th December 1954 :  Vol. 1: A-B : Vol. 2: C-E , Vol 3: F-H 

 - Losebl.-Ausg. 
<br/><br/> 14.832 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internationale Patentklassifikation