Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1992-06-04
1993-08-03
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
Patent
active
D03379612
REFERENCES:
patent: D28197 (1898-01-01), Ander
patent: D266155 (1982-09-01), Scherenberg, Jr.
patent: D325458 (1992-04-01), Meyers, Jr. et al.
Burke Wallace R.
Jackson Marcus
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