Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1989-12-26
1992-02-18
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
D11141
Patent
active
D03240002
REFERENCES:
patent: D125694 (1941-03-01), Price
patent: D250455 (1978-12-01), Mohrhauser
patent: D262000 (1981-11-01), Gall
patent: D279873 (1985-07-01), Neely
patent: D285669 (1986-09-01), Brockmann
patent: D297129 (1988-08-01), Andersen
patent: D317419 (1991-06-01), Ronzheimer
patent: 4967633 (1990-11-01), Jewell, Jr.
Brown Charles J.
Burke Wallace R.
Jackson Marcus
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