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:
May. 03, 1994
Filed:
Jul. 31, 1991
Yuji Hirai, Fukuoka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A radio telephone includes a cordless telephone fixed set and a mobile set. The cordless telephone fixed set is connected to a telephone line. The mobile set includes a first transmitter and a first receiver for radio communication with the cordless telephone fixed set. In addition, the mobile set includes a second transmitter and a second receiver for radio communication with an external base station. The mobile set includes a device for instructing a communication start, a device for detecting an answer signal outputted from the cordless telephone fixed set, a device for enabling the first transmitter to transmit a talking start signal when the instructing device instructs the communication start, and a device for, in cases where the first transmitter transmits the talking start signal but the detecting device fails to detect the answer signal, enabling the second transmitter to transmit a talking start signal.