Evolution of patent filing activities in the EEC :  a contribution to the study and assessement of the technological trends developing in the EEC from 1969 to 1975, based on a statistical analysis of patents / 
Mitarb.: Hans Grevnik ; Hermann Kronz 
 - V, 369 S. 
 - information management  EUR 6574 EN .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Patentwesen<br/>Europäische Gemeinschaft