05333176 is referenced by 111 patents and cites 7 patents.

A hand held cellular telephone system including voice storage features which enable the cellular telephone to perform functions similar to a telephone answering device, a battery monitoring system for providing the user with a real time display of the amount of time remaining for use of the cellular telephone in both the standby and conversation modes, and an interface adapter which may be used to provide speakerphone functions, power the cellular telephone, and recharge the battery.

Title
Cellular hand held portable speakerphone system having an interface adapter
Application Number
876102
Publication Number
5333176
Application Date
July 26, 1993
Publication Date
July 26, 1994
Inventor
Yoji Tsujishita
Kyoto
JP
Toshiharu Fukuma
Plano
TX, US
Thomas K Brown
Plano
TX, US
Takashi Nakano
Shiga
JP
Yoshihiro Kinoshita
Plano
TX, US
Timothy M Burke
Plano
TX, US
Agent
Spensley Horn Jubas & Lubitz
Assignee
Murata Machinery
JP
IPC
H04M 11/00
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