Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1991-07-25
1993-09-28
Pfeffer Wallace, Terry A.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
Patent
active
D03397572
REFERENCES:
patent: D309119 (1990-07-01), Kremitzki
patent: D310664 (1990-09-01), Murphy
patent: D312222 (1990-11-01), Sawyer
patent: 4837559 (1989-06-01), Green
patent: 4888580 (1989-12-01), Distel
patent: 4899135 (1990-02-01), Ghahariiran
Gernstein Terry M.
Pfeffer Wallace Terry A.
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