Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1991-09-04
1993-07-27
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
Patent
active
D03377342
REFERENCES:
patent: D241824 (1976-12-01), Mackay
patent: D246635 (1977-12-01), Boldt et al.
patent: D276417 (1984-11-01), Fenne
patent: D321330 (1991-11-01), Gagnon et al.
patent: 4305069 (1981-12-01), Machen
patent: 4358760 (1982-11-01), Palmer
patent: 4682148 (1989-08-01), Kichline
Burke Wallace R.
Gernstein Terry M.
Jackson Marcus
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