DIFF Subgroup
G08B 17/04 Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
Introduced: September 1968
Full Title
Fire alarms; Alarms responsive to explosion > Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
No child classifications to compare. This is a leaf node in both IPC and CPC.