Combined audible alarm and signalling transmitter

Details Combined audible alarm and signalling transmitter Combined audible alarm and signalling transmitter

1990-11-05

1993-07-06

Burke, Wallace R.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Alarm or control thereof

D10 30

Patent

active

D03370674

REFERENCES:
patent: D297220 (1988-08-01), Dutcher
patent: D313950 (1991-01-01), Groce
patent: D321329 (1991-11-01), Barnett et al.
patent: 2448943 (1948-09-01), Wolff
patent: 4158197 (1979-06-01), Takagaki
patent: 4692749 (1987-09-01), Bussing
patent: 4694284 (1987-09-01), Leveille
patent: 4926572 (1990-05-01), Holmes
patent: 4965553 (1990-10-01), DelBiondo, II et al.
patent: 4973944 (1990-11-01), Maletta
patent: 5014040 (1991-05-01), Weaver et al.
Hong Kong Enterprise Oct. 1989 p. 106 TC-92G (clock).
Hong Kong Enterprise May 1981 p. 198 (watch).

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