|
GB2067324A
|
|
Intruder detection apparatus
|
|
GB2080000A
|
|
Data transmission system
|
|
GB2077504A
|
|
Vibration switch
|
|
GB2050025A
|
|
Intrusion detector system
|
|
GB2040093A
|
|
Instrusion detector
|
|
GB2022300A
|
|
Codeable card and card-reading apparatus thereof
|
|
GB2036398A
|
|
Fence disturbance sensor arrangement
|
|
GB1554661A
|
|
Dual frequency radar intruder detector
|
|
GB1551036A
|
|
Wall bracket
|
|
GB1524081A
|
|
Vibration switch
|
|
DE2608449A1
|
|
Intruder detector radio wave system - uses microwaves received by aerial connected to preamplifier and logarithmic filter
|
|
GB1409658A
|
|
Flat beam intruder detection device
|
|
GB1351046A
|
|
Alarm device for a lockable cabinet
|
|
GB1326564A
|
|
Micro-wave transmitter-reiceiver device
|
|
GB1336255A
|
|
Micro-wave intruder detector systems
|
|
GB1323542A
|
|
Electric combination lock
|
|
GB1312285A
|
|
High-frequency intruder detector
|
|
GB1276687A
|
|
Radar intruder detector
|
|
GB1278646A
|
|
Protective barrier
|
|
GB1237109A
|
|
Discriminating amplifier for high frequency detection devices
|
