Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1985-10-10
1987-08-18
Kemper, Catherine E.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
Patent
active
D02914212
REFERENCES:
patent: D102543 (1936-12-01), Butterfield
patent: D199878 (1964-12-01), Mulligan
patent: D263383 (1982-03-01), Moore
patent: D266652 (1982-10-01), Nagel
patent: D279461 (1985-07-01), Lafreniere
Buckman Thomas W.
Kemper Catherine E.
O'Brien John P.
W. A. Deutsher Pty. Ltd.
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