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. 02, 1977
Filed:
Mar. 26, 1976
Applicant:
Inventors:
Hirotoshi Shirasu, Yokohama, JA;
Hirotaka Usuda, Yokohama, JA;
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q / ;
U.S. Cl.
CPC ...
179 / ;
Abstract
A line identifying system for an automatic switching system of the common control type employs a line identifier adapted to be connected to any of a plurality of switch frames through a connector, which cuts off the operating circuit for a connector relay corresponding to a switch frame upon receipt of instructions from the line identifier and prepares the operating circuit of the connector relay corresponding to the switch frame upon receipt of instructions from a switch controller.