Attachable and detachable additional device for use with a porta

Details Attachable and detachable additional device for use with a porta Attachable and detachable additional device for use with a porta

1995-06-07

1996-02-06

Kuntz, Curtis

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 59, 455 90, H04Q 732

Patent

active

054902029

ABSTRACT:
An additional device for a portable telephone electrically connects a battery pack to a portable telephone main body. The additional device has first connecting means for detachably connecting the additional device to the portable telephone main body, and second connecting means for detachably connecting the battery pack to the additional device. The additional device functions to deal with a signal provided from an external equipment while supplying electric power from the battery pack to the portable telephone main body.

REFERENCES:
patent: 5136229 (1992-08-01), Galvin
patent: 5155659 (1992-10-01), Kunert
patent: 5155860 (1992-10-01), McClure
patent: 5170494 (1992-12-01), Levanto
patent: 5247566 (1993-09-01), Hiramatsu
patent: 5249218 (1993-09-01), Sainton
patent: 5257414 (1993-10-01), Trahan et al.
patent: 5353330 (1994-10-01), Fujiwara
patent: 5367556 (1994-11-01), Marui et al.

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