TY  - GEN
T1  - General information on the seventh edition of the International Patent Classification (IPC).
ET  - Seventh edition.
VL  - no. 409(E)
CN  - K1516
LA  - eng
N1  - Cover title: International patent classification (seventh edition1999) general information.
ID  - 13052
KW  - Patents.
KW  - Intellectual property.
KW  - WIPO DOCUMENTS : IPC UNION : GENERAL INFORMATION
KW  - PATENTS : INTERNATIONAL CLASSIFICATION
SN  - 9280509071
TI  - General information on the seventh edition of the International Patent Classification (IPC).
ER  -