Title:
TELEPHONE MUTUAL COMMUNICATION SYSTEM FOR FIRE INFORMATION FACILITY BE TWEEN RECEIVER AND SECONDARY RECEIVER
Document Type and Number:
Japanese Patent JPS52123197
Kind Code:
A
Abstract:
PURPOSE: To secure quick communication and safe indication at fire outbreak by having telephone communication between the receiver and secondary receiver with calling from either side.
Inventors:
KAMORI TAKEYUKI
SHIBATA KIYOSHI
SHIBATA KIYOSHI
Application Number:
JP4010176A
Publication Date:
October 17, 1977
Filing Date:
April 08, 1976
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G08B25/00; G08B17/00; G08B23/00; (IPC1-7): G08B17/00; G08B25/02
Domestic Patent References:
| JP49117704B | ||||
| JPS4710758U | 1972-10-07 |