Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1977-02-14
1978-09-05
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D1005
Patent
active
D02492482
REFERENCES:
patent: D190994 (1961-08-01), Fruh
patent: D228259 (1973-08-01), Pinkham
patent: 2916730 (1959-12-01), Johnson
patent: 3643244 (1972-02-01), Levy
patent: 3720935 (1973-03-01), Tomlin
American District Telegraph Company
Lucas Susan J.
Smith Charles B.
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