| 摘要 |
1,272,035. Vehicle theft alarms. C. R. HUNT. 13 Oct., 1970, No. 48813/70. Addition to 1,135,346. Heading G4N. A vehicle theft alarm is set by closing a multi-way master switch which opens the ignition circuit and allows a relay to be energized when a door or bonnet is opened. One relay contact holds the relay energized, whilst further relay contacts operate the horn and flash four lamps. |
