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| Standard Insuued on: 1999-03 |
GB/T 4728.9-1999 Graphical symbols for diagrams-Part 9：Telecommunications：Switching and peripheral equipment
电气简图用图形符号 第9部分：电信 ： 交换和外围设备
| Category No.: | GB | Valid Status: | superseded |
| Issued Organization: | State Qualtiy Technical Supervision Bureau | Issued Date: | 1999-03-23 |
| Implemented Date: | 1999-10-1 | Abolished Date: | |
| Superseded Standard.: | GB/T 4728.9-2008 Graphical Symbols for Diagrams - Part 9: Telecommunications: Switching and Peripheral Equipment |
Superseded Date: | 2009-1-1 |
QC/T 454-1999
QC/T 466-1999
DB50/T 23-1999
FZ/T 95013-1999
DB37/ 265-1999
QC/T 461-1999
FZ/T 90104-1999
GB 50096-1999
GB/T 17695-1999
GB/T 17693.1-2008
TB 10219-1999
SL 234-1999
GB 4343.2-1999
GB 17691-1999
GB 14761-1999
GB 3847-1999
GB 17681-1999
GB/T 24040-1999
GB/T 17711-1999
SY/T 6358-1998
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