IEC - International Electrotechnical Commission - IEC 60117-9B:1971
Supplement B - Recommended graphical symbols - Part 9: Telephony, telegraphy and transducers
revised
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| Organization: | IEC - International Electrotechnical Commission |
| Publication Date: | 1 April 1971 |
| Status: | revised |
| Page Count: | 2 |
| ICS Code (Public information symbols. Signs. Plates. Labels): | 01.080.10 |
Document History
IEC 60117-9B:1971
April 1, 1971
Supplement B - Recommended graphical symbols - Part 9: Telephony, telegraphy and transducers
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