1.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1981.
German | 29 DE |
2.
3.
Courbevoie [France] : Institut National de la Propriété Industrielle, 1979.
English | 10A OMPI |
4.
5.
6.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1978.
German | 28 DE |