1
Bernadine O Narcisse: Out-of-range personnel monitor and alarm. Paul L Hickman, June 3, 1986: US04593273 (208 worldwide citation)

An out-of-range monitor and alarm system that may be used by a convalescent home or the like to alert an attendant in the home that a supervised person has walked beyond a predetermined prescribed distance. The system includes a base unit that transmits a signal at a frequency F1 to a receiver in a ...


2
Bernadine O Narcisse: Out-of-range personnel monitor and alarm. June 23, 1987: US04675656 (201 worldwide citation)

An out-of-range monitor and alarm system that may be used by a convalescent home or the like to alert an attendant in the home that a supervised person has walked beyond a predetermined prescribed distance. The system includes a base unit that transmits a first signal to a receiver in a mobile unit ...



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