Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1985-08-14
1988-10-04
Kemper, Catherine E.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D10120
Patent
active
D02979187
REFERENCES:
patent: D226137 (1973-01-01), Selsby
patent: D276709 (1984-12-01), Parker
Kamada Signal Appliances Co., Ltd.
Kemper Catherine E.
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