Measuring – testing – or signalling instruments – Security or signal instrument or casing – Lost child or person locator
Patent
1989-12-18
1991-10-15
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Lost child or person locator
Patent
active
D03207587
REFERENCES:
patent: D277465 (1985-02-01), MacDonald
patent: D294231 (1988-02-01), Cameron, Jr. et al.
patent: D305881 (1990-02-01), Bergeron
patent: D312423 (1990-11-01), Orlinsky et al.
NuTone 1979, p. 39, upper left corner-Smoke Detector.
Lutz William R.
Onsrud William C.
Burke Wallace R.
Darnell Kenneth E.
Jackson Marcus
National Service Industries, Inc.
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