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:
Apr. 01, 1986
Filed:
Aug. 20, 1984
Applicant:
Inventor:
Motohiro Gotanda, Nakabyo, Abiko-shi, Chiba-ken, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
179 / ; 179 / ;
Abstract
A surveillance apparatus for the detection and prevention of damages due to fires, gas, robbery and other destructive conditions of a building which has a large number of rooms each furnished with a telephone set and a door provided with a lock. The telephone cables extending between respective rooms and a main terminal board of the building are utilized as wires for transmitting detection signals of detectors provided in respective rooms to indicators provided in a central surveillance room during the locking of the door.