Distance alarm and notification device for use with mobile...

Details Distance alarm and notification device for use with mobile... Distance alarm and notification device for use with mobile...

2006-02-28

2006-02-28

Milord, Marceau (Department: 2682)

Telecommunications

Radiotelephone system

Out-of-range indication

C455S067110, C455S404200

Reexamination Certificate

active

07006822

ABSTRACT:
A mobile phone set including a mobile phone and a warning apparatus detects an electric field strength of a second electric wave transmitted from the mobile phone and the warning apparatus, and gives a warning sound and the like, which enables users to recognize the fact when the mobile phone is lost or stolen.

REFERENCES:
patent: 6006115 (1999-12-01), Wingate
patent: 6013007 (2000-01-01), Root et al.
patent: 6151493 (2000-11-01), Sasakura et al.
patent: 6198390 (2001-03-01), Schlager et al.
patent: 6510380 (2003-01-01), Curatolo et al.

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