| 1/00 | Systems for signalling characterised solely by the form of transmission of the signal |
| 1/02 | Systems for signalling characterised solely by the form of transmission of the signal using only mechanical transmission |
| 1/04 | Systems for signalling characterised solely by the form of transmission of the signal using hydraulic transmission; using pneumatic transmission |
| 1/06 | Systems for signalling characterised solely by the form of transmission of the signal using hydraulic transmission; using pneumatic transmission hydraulic only |
| 1/08 | Systems for signalling characterised solely by the form of transmission of the signal using electric transmission |
| 3/00 | Audible signalling systems; Audible personal calling systems (audible indication of time signals G04B 21/00, G04C 21/00) |
| 3/02 | Audible signalling systems; Audible personal calling systems (audible indication of time signals G04B 21/00, G04C 21/00) using only mechanical transmission |
| 3/06 | Audible signalling systems; Audible personal calling systems (audible indication of time signals G04B 21/00, G04C 21/00) using hydraulic transmission; using pneumatic transmission |
| 3/10 | Audible signalling systems; Audible personal calling systems (audible indication of time signals G04B 21/00, G04C 21/00) using electric transmission; using electromagnetic transmission |
| 3/14 | Audible signalling systems; Audible personal calling systems (audible indication of time signals G04B 21/00, G04C 21/00) using explosives |
| 5/00 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) |
| 5/02 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) using only mechanical transmission |
| 5/06 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) using hydraulic transmission; using pneumatic transmission |
| 5/14 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) using hydraulic transmission; using pneumatic transmission with indicator element moving about a pivot, e.g. hinged flap, rotating vane |
| 5/16 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) using hydraulic transmission; using pneumatic transmission with indicator element moving about a pivot, e.g. hinged flap, rotating vane with reset means necessitating a separate operation to return the indicator element |
| 5/18 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) using hydraulic transmission; using pneumatic transmission with indicator element moving rectilinearly |
| 5/20 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) using hydraulic transmission; using pneumatic transmission with indicator element moving rectilinearly with reset means necessitating a separate operation to return the indicator element |
| 5/22 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) using electric transmission; using electromagnetic transmission |
| 5/24 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap, rotating vane |
| 5/26 | Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied (display of time signals G04B 19/00, G04C 17/00, G04C 19/00, G04G 9/00; for display of alphanumeric information G09F; flags, banners G09F) using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap, rotating vane with reset means necessitating a separate operation to return the indicator element |