Measuring – testing – or signalling instruments – Security or signal instrument or casing – Element or attachment
Patent
1977-07-05
1978-07-25
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Element or attachment
D10106, D1006
Patent
active
D02486296
REFERENCES:
patent: D215974 (1969-11-01), Berns
patent: 3343123 (1967-09-01), Troesh
Nutone Door Chimes Bulletin, Rec'd 12-1959, L-70, Electronic Chime.
Conforti Frederick J.
Hanig Harvey
Robertson Roy C. A.
Juettner Thomas R.
Lucas Susan J.
Pittway Corporation
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