Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1979-09-27
1982-05-11
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
D1006
Patent
active
D02643200
REFERENCES:
patent: D124993 (1941-02-01), Corbett
patent: D183152 (1958-07-01), Wellhofer
patent: D207755 (1967-05-01), Stevenson
Lucas Susan J.
V & E Friedland Limited
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