HSektion H — ElektrotechnikELECTRICITY
disable hierarchy mode: H04H04Elektrische NachrichtentechnikELECTRIC COMMUNICATION TECHNIQUE
disable hierarchy mode: H04QLink to definition of IPC symbol: H04QH04QWähltechnik (Schalter, Relais, Wähler H01H; drahtlose Nachrichtenübertragungsnetzwerke H04W) [1, 2009.01]SELECTING (switches, relays, selectors H01H;  wireless communication networks H04W) [1, 2009.01]
disable hierarchy mode: H04Q 3/00Link to definition of IPC symbol: H04Q 3/00Link to Depatisnet beginner's search with IPC symbol: H04Q 3/00H04Q 3/00Wählanordnungen (H04Q 5/00-H04Q 11/00 haben Vorrang) [1, 2006.01]Selecting arrangements (H04Q 5/00-H04Q 11/00 take precedence) [1, 2006.01]
disable hierarchy mode: H04Q 3/18Link to Depatisnet beginner's search with IPC symbol: H04Q 3/18H04Q 3/18
. Schaltungsanordnungen für die Freiwahl [1, 2006.01]
. Circuit arrangements for first stage of hunting switching [1, 2006.01]
disable hierarchy mode: H04Q 3/30Link to Depatisnet beginner's search with IPC symbol: H04Q 3/30H04Q 3/30
. . Wählersucher, d.h. Vorwähler, Anrufordner [1, 2006.01]
. . Selector finders, i.e. allotters [1, 2006.01]