urn:nbn:si:doc-e4m4oaj41937documents/doc/E/urn_nbn_si_doc-e4m4oaj4_001.pdfdocuments/doc/E/urn_nbn_si_doc-e4m4oaj4_001.txtdocuments/doc/E/urn_nbn_si_doc-e4m4oaj4_001.xml4 str.31488515urn:nbn:si:doc-e4m4oaj4slvUprava za zaštitu industriske svojineOgrevanje (vobče)PDMpatentipatenti Kraljevine Jugoslavijepatenti Kraljevine Srbov, Hrvatov in Slovenevpatentni spisi