Wall chime

Details Wall chime Wall chime

1979-09-27

1982-05-04

Lucas, Susan J.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Aural, i.e., audible

D1006

Patent

active

D02641968

REFERENCES:
patent: D197681 (1964-03-01), Stevenson
patent: D201593 (1965-07-01), Stevenson
patent: 2170521 (1939-08-01), Rodth
On-Guard Corp. of America Form 2004, Solid State Burglar & Fire Alarm System.
Nutone Door Chime Catalog, .TM.1959, "Built-In" Chime, #L-14.

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