Home / Standards / GB/T 39551.1-2020 GB/T 39551.1-2020 Active Patent navigation guide—Part 1:General principles 专利导航指南 第1部分:总则 Standard Type GBT ICS 03.140 CCS A00 Status 现行 Issue Date 2020-11-09 Implementation 2021-06-01 Responsible Dept 国家知识产权局 Drafting Unit N/A