Unobstructed fence security system

Details Unobstructed fence security system Unobstructed fence security system

1998-12-31

2000-11-14

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

340332, 340539, 3405733, 3406914, 340692, G08B 2300

Patent

active

061476099

ABSTRACT:
A barrier opening security system is provided for use with a barrier having an opening. Also included is a deterrent device mounted on the barrier adjacent to the opening for maintaining the opening unobstructed and further for deterring the passage of a being therethrough upon the actuation thereof.

REFERENCES:
patent: 3725895 (1973-04-01), Haynes
patent: 4910500 (1990-03-01), Carr
patent: 5009192 (1991-04-01), Burman
patent: 5019802 (1991-05-01), Brittain et al.
patent: 5023597 (1991-06-01), Salisbury
patent: 5241923 (1993-09-01), Janning
patent: 5257012 (1993-10-01), Metcalf
patent: 5892446 (1999-04-01), Reich

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