Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1996-06-05
1997-08-12
Jackson, Marcus A.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
1006
Patent
active
D03822214
REFERENCES:
patent: D292498 (1987-10-01), Hayaski
patent: D313195 (1990-12-01), Memmola
patent: D345317 (1994-03-01), Issa
patent: D347596 (1994-06-01), Jackson
Jackson Marcus A.
Portman Electronic International Corp.
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