TY  - GEN
T1  - China's patent reexamination and invalidation in 1990 /
AU  - Zhao, Yuanguo,
VL  - 1991 No 2 pages 12-14
ID  - 4645
KW  - Patents
KW  - Trademarks
KW  - PATENTS : ACQUISITION : PRELIMINARY EXAMINATION, SIMPLE APPLICATION, REEXAMINATION
TI  - China's patent reexamination and invalidation in 1990 /
ER  -