Home / Standards / GB/T 22775-2008 GB/T 22775-2008 Active Gears for timekeeping instruments - Contrate gears 计时仪器用齿轮 端面齿轮 Standard Type GBT ICS 39.040.01 CCS Y11 Status 现行 Issue Date 2008-12-30 Implementation 2009-09-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A