Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1985-05-07
1987-12-08
Kemper, Catherine E.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
D 8331
Patent
active
D02930919
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Harrison John M.
Kemper Catherine E.
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