Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1991-07-09
1992-11-10
Ng, Jin F.
Communications: electrical
Condition responsive indicating system
With particular system function
340531, 340502, 340573, G08B 2300
Patent
active
051627760
ABSTRACT:
An apparatus and method for providing a positive indication at a central monitoring station of a personal emergency response system that a responder has arrived at a subscriber's location and has taken responsibility for the subscriber's aid.
REFERENCES:
patent: 3914692 (1975-10-01), Seaborn, Jr.
patent: 4724538 (1988-02-01), Farrell
patent: 4884059 (1989-11-01), Shapiro
patent: 4884060 (1989-11-01), Shapiro
patent: 5032823 (1991-07-01), Bower et al.
patent: 5045839 (1991-09-01), Ellis et al.
Abbott Charles B.
Bushnell Robert A.
French Stewart B.
Lifeline Systems Inc.
Ng Jin F.
Popovici Dov
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