IPC 2013 : E05B 45/02 : with mechanically-operated bells.

IPC2013 > E > E05 > E05B > E05B 45/00 > E05B 45/02[1] > with mechanically-operated bells.
Notes[t] E01 - E06: BUILDING
E SECTION E — FIXED CONSTRUCTIONS.
E05 LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES.
E05B LOCKS; ACCESSORIES THEREFOR; HANDCUFFS.
E05B 45/00 Alarm locks (alarm devices actuated by tampering with fastenings in general G08B).
E05B 45/02 · with mechanically-operated bells.