Measuring – testing – or signalling instruments – Security or signal instrument or casing – Element or attachment
Patent
1978-07-10
1981-03-17
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Element or attachment
D13 12, D1005, D1303
Patent
active
D02585782
REFERENCES:
patent: D241323 (1976-09-01), Sparks et al.
patent: 3358190 (1967-12-01), Mathison
Audiotex Security Alarm Catalog, 1974, p. 2, Personal-Sentry Alarm.
Lucas Susan J.
North American Philips Corporation
Trifari Frank R.
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