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:
Aug. 09, 1988
Filed:
Apr. 17, 1986
Iwatsu Electric Co., Ltd., Tokyo, JP;
Abstract
A key telephone system provided with a power supply for supplying power to a specified key telephone set at all times and a controlled power supply capable of turning ON and OFF the power supply to controlled key telephone sets other than the specified key telephone set. The controlled power supply has provision for being automatically turned ON and OFF in accordance with a predetermined schedule or turned ON and OFF under control of the specified set. The power supply is turned ON upon receiving an incoming call or turned OFF upon ON - hooking of the key telephone set after a talking operation with a calling party or automatically turned ON and OFF in response to a specified dial signal incoming after automatically answering the incoming call. The key telephone system can have provision for individually controlling the power supply to each controlled key telephone set.