Siren for fire alarm

Details Siren for fire alarm Siren for fire alarm

1989-07-07

1991-07-23

Burke, Wallace R.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Aural, i.e., audible

D10106

Patent

active

D03184374

REFERENCES:
patent: D243321 (1977-02-01), Mayer
patent: D244362 (1977-05-01), Mayer
patent: D246700 (1977-12-01), Gilson
patent: D256002 (1980-07-01), Price
patent: D265802 (1982-08-01), Vickery
patent: D279771 (1985-07-01), Hinata
patent: 4525703 (1985-06-01), Bellino

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