DIFF Subgroup
G08B 13/181 using active radiation detection systems
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
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
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- G08B 13/183 by interruption of a radiation beam or barrier since 1990 IPC+CPC Available in IPC and CPC