07890089 is referenced by 85 patents and cites 287 patents.

The communication device implements a voice communicating function, a specific event location producing function, a multiple device door locking function, a multiple device door unlocking function, and a phone call making log recording function.

Title
Communication device
Application Number
11/743768
Publication Number
7890089 (B1)
Application Date
May 3, 2007
Publication Date
February 15, 2011
Inventor
Iwao Fujisaki
Tokyo, 181-0001
JP
IPC
H04K 3/00
H04M 3/42
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