Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1991-05-31
1993-02-23
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
Patent
active
D03334422
REFERENCES:
patent: D294562 (1988-03-01), Chao
patent: 3049090 (1962-08-01), Bergen
patent: 3076186 (1963-01-01), Greene
patent: 3524030 (1970-08-01), Wiegel
patent: 3953831 (1976-04-01), Estrada
patent: 3964045 (1976-06-01), Conley
patent: 4644330 (1987-02-01), Dowling
patent: 4875030 (1989-10-01), Chiu
Burke Wallace R.
Gernstein Terry M.
Jackson Marcus
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