Siren

Details Siren Siren

1983-12-19

1985-07-23

Bullock, B. J.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Aural, i.e., audible

Patent

active

D02797712

REFERENCES:
patent: D269417 (1983-06-01), Shintaker
patent: D275843 (1984-10-01), Sharenow
patent: 1351904 (1920-09-01), Hartman
patent: 1746437 (1930-02-01), Giles
patent: 2017132 (1935-10-01), Ricci
patent: 4171677 (1979-10-01), Hibell
Yankee Emergency Equipment, 1979, p. 21, Speakers All on the page.
Sirene, 1979, p. 5, Siren Speakers #44860 in lower left corner.

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