using hydraulic transmission; using pneumatic transmission

Introduced: September 1968

Full Title

Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied > using hydraulic transmission; using pneumatic transmission

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

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G08B 5/14 with indicator element moving about a pivot, e.g. hinged flap or rotating vane IPC+CPC Available in IPC and CPC
G08B 5/18 with indicator element moving rectilinearly IPC+CPC Available in IPC and CPC