Cover for a duct-type smoke detector

Details Cover for a duct-type smoke detector Cover for a duct-type smoke detector

1990-05-30

1992-06-23

Burke, Wallace R.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Lost child or person locator

Patent

active

D03272281

REFERENCES:
patent: D248152 (1978-06-01), Hastings
patent: D253169 (1979-10-01), Conforti
patent: D258353 (1981-02-01), Mango et al.
patent: D261243 (1981-10-01), Mintz et al.
patent: D274707 (1984-07-01), French
EXHIBIT A-Covers Sold by Pittway Corporation.
EXHIBIT B-Covers Sold by Pittway Corporation.
EXHIBIT C-Air Duct Detector, Showing Cover, Sold by a Third Party.

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