IPC Main Group
H04Q 1/00 Details of selecting apparatus or arrangements
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- SELECTING
Related Keywords
FRAMES for relays or selector switchesRACKS for electric relays or selector switches
2 direct subcodes
Child Classifications
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