DIFF Subgroup
G08B 13/187 by interference of a radiation field
Introduced: January 1990
Full Title
Burglar, theft or intruder alarms > Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength > using active radiation detection systems > by interference of a radiation field
No child classifications to compare. This is a leaf node in both IPC and CPC.