Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1985-09-09
1989-04-18
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
D10114
Patent
active
D03007308
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Kobishi Electric Co., Ltd.
Lucas Susan J.
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