Home / Standards / GB/T 10609.4-1989 GB/T 10609.4-1989 Abolished Technical drawings--Requirements for microcopying 技术制图 对缩微复制原件的要求 Standard Type GBT ICS 01.100 CCS J04 Status 废止 Issue Date 1989-03-22 Implementation 1990-01-01 Responsible Dept 国家标准委 Drafting Unit N/A