| 摘要 |
Mechanical or electronic device for defence and security against intruders, thieves, brigands, for various taxi vehicles or others, banks, strong rooms, jewellers and other various premises by defensive means based on aerosol gas or other products legally authorised, having gas as their medium. The device allows self-help. In the system said to be for a taxi, a specific siren may be employed to this end; it will be placed, for example, in the boot.
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