Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1991-08-13
1993-08-31
Pfeffer, Terry A.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
Patent
active
D03388433
REFERENCES:
patent: D279471 (1985-07-01), Nakashima
patent: D313363 (1991-01-01), Reich et al.
Loose Duane M.
Savio Vincent J.
Lifeline Systems Inc.
Pfeffer Terry A.
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