| 摘要 |
629,912. Preventing unauthorized use of motor vehicles. BRUN ENGINEERING, Ltd., and WALTON, J. L. April 2, 1947, No. 9018. Drawings to Specification. [Class 7 (ii)] [Also in Gorup XXXVIII] In a vehicle theft alarm system (see Group XXXVIII) a manually-operable switch is provided for silencing the alarm, and at the same time breaking the vehicle ignition circuit. , |
