Personal security alarm

Details Personal security alarm Personal security alarm

1979-02-26

1981-07-28

Lucas, Susan J.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Alarm or control thereof

D1005

Patent

active

D02600080

REFERENCES:
patent: 2809368 (1957-10-01), Ehlers, Jr.
Merchandising Week, 8-28-1972, p. 9, Wessel Hardware Corp., Door Alarm.

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