Combined personal alarm and key ring

Details Combined personal alarm and key ring Combined personal alarm and key ring

1988-07-21

1990-10-16

Gandy, James M.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Alarm or control thereof

Patent

active

D03113493

REFERENCES:
patent: D260008 (1981-07-01), Wistrand
patent: D305210 (1989-12-01), Arduini et al.
patent: D306095 (1990-02-01), Kim
patent: 4277782 (1981-07-01), Chao
patent: 4404549 (1982-09-01), Berg
patent: 4418337 (1983-11-01), Bader
patent: 4520351 (1985-05-01), Altman et al.
patent: 4633232 (1986-12-01), Nelson et al.
patent: 4667188 (1987-05-01), Schwartz
patent: 4719454 (1988-01-01), Hopkins et al.
patent: 4730184 (1988-03-01), Bach

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