Mobile security system

Details Mobile security system Mobile security system

1991-06-25

1993-07-06

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Stabilized, anti-hunting or antioscillation systems

307 103, 307 106, 340426, B60R 2504

Patent

active

052257134

ABSTRACT:
An apparatus is provided for preventing unauthorized operation of an engine of a motorized vehicle having a cellular telephone whereby certain DTMF tones must be generated on the cellular telephone prior to the engine of a motor vehicle being operational.

REFERENCES:
patent: 4023138 (1977-05-01), Ballin
patent: 4413261 (1983-11-01), Greenber
patent: 4507644 (1985-03-01), Abrahamson
patent: 4809199 (1989-02-01), Burgess et al.
patent: 5000139 (1991-03-01), Wong
patent: 5113427 (1992-05-01), Ryoichi et al.

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