TY  - GEN
ET  - Seventh edition.
ID  - 23490
KW  - Patents.
KW  - Intellectual property.
KW  - WIPO DOCUMENTS : IPC UNION : PATENTS : STRASBOURG AGREEMENT OF 1971
KW  - INTERNATIONAL PATENT CLASSIFICATION (IPC) : CATCHWORD INDEX
T1  - Official catchword index to the seventh edition (1999) of the International Patent Classification
TI  - Official catchword index to the seventh edition (1999) of the International Patent Classification
ER  -