1.
|
Geneva [Switzerland] : International Bureau for the Protection of Industrial Property, 1972.
English | 10B OMPI |
|
2.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1978.
German | 28 DE |
|
3.
|
Buffalo, New York : The Patent and Trademark Office Society, 1976.
English | 47 US |
|
4.
|
Buffalo, New York : The Patent and Trademark Office Society, 1973.
English | 47 US |
|