Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1976-11-22
1978-02-07
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D1005
Patent
active
D02471647
REFERENCES:
patent: D236817 (1975-09-01), Sweany
patent: 3681603 (1972-08-01), Scheidweiler et al.
Mountain West Alarm Supply Co. Catalog, "Space Age Security", Rec'd Sept. 24, 1971, p. 10, -- Solid State Ultrasonic Alarm.
Lucas Susan J.
Renner Edward H.
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