with indicator element moving about a pivot, e.g. hinged flap or rotating vane

Full Title

Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied > using hydraulic transmission; using pneumatic transmission > with indicator element moving about a pivot, e.g. hinged flap or rotating vane

Child Classifications

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• G08B 5/16 with reset means necessitating a separate operation to return the indicator element