Records of the Strasbourg Diplomatic Conference on the International Patent Classification : March 15 to 24, 1971
Av: Diplomatic Conference on the International Patent Classification (1971 : Strasbourg).
Medverkande: World Intellectual Property Organization [pbl] | Council of Europe [pbl].
Materialtyp:![materialTypeLabel](/opac-tmpl/lib/famfamfam/BK.png)