The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 1994
Filed:
Jan. 09, 1992
Applicant:
Inventors:
Kuniyoshi Marui, Saitama, JP;
Goichi Sato, Tokyo, JP;
Buntaro Sawa, Kanagawa, JP;
Hiroshi Sato, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ; H04B / ; H04B / ;
U.S. Cl.
CPC ...
379 58 ; 379 63 ; 379432 ; 379446 ; 379454 ; 455 89 ; 455 90 ; 455343 ;
Abstract
A portable radio unit used with an adaptor unit having a hand-free circuit is disclosed. The hand-free circuit is activated in response to a contact between a contact-type connector of the portable radio unit and a contact-type connector of the adaptor unit in the event that the portable radio unit being in a communication state is attached to the adapter unit. Power supply to the hand-free circuit is also initiated in response to the contact of the connectors.