Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1979-10-30
1982-03-16
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
D1006
Patent
active
D02633833
REFERENCES:
patent: D42832 (1912-07-01), Cameron
patent: 1648245 (1927-11-01), Rudolph
Byrne John J.
Lucas Susan J.
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