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:
Dec. 20, 1983
Filed:
Dec. 05, 1980
Applicant:
Inventor:
Sakae Horyu, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
179 / ; 179 / ;
Abstract
A communication device, wherein a state of coupling of a signal to be emitted and signal to be received is controlled by mounting and dismounting of a coupler, then the signal to be emitted is introduced as an input from an input device of a terminal device, while the signal to be received is produced as an output to an output device of the terminal device, and further, at the time of mounting the coupler, communication is carried out with communication lines through the coupler, while, at the time of dismounting the coupler, the information input from the input device is recorded or displayed by the output device.