Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1982-01-25
1984-10-23
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
Patent
active
D02760290
REFERENCES:
patent: D213027 (1968-12-01), Walz
patent: D242133 (1976-11-01), Fitzsimonds
patent: D256897 (1980-09-01), Arima et al.
patent: D258577 (1981-03-01), Bottner
patent: D271089 (1983-10-01), Mallory
patent: 4092641 (1978-05-01), Billinghausen
Electronic Design, Oct. 25, 1977, p. 24, Smoke detector, in middle of page.
Burke Wallace R.
Gateway Scientific, Inc.
Gitlin Suzanne N.
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