Entry alert guard

Details Entry alert guard Entry alert guard

1997-07-29

2000-01-11

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

Specific condition

340686, 340692, G08B 1308

Patent

active

060140771

ABSTRACT:
An apparatus for monitoring the positional status of a moveable gate in an entryway and capable of providing a warning when that status is altered with a programmable audio voice message.

REFERENCES:
patent: Re35268 (1996-06-01), Frolov et al.
patent: 3820102 (1974-06-01), Schubert
patent: 4278968 (1981-07-01), Arnett
patent: 4835520 (1989-05-01), Aiello
patent: 4982176 (1991-01-01), Schwarz
patent: 5243325 (1993-09-01), Marin
patent: 5473310 (1995-12-01), Ko

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