Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1991-05-29
1992-12-15
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
D10106, D10120
Patent
active
D03317196
REFERENCES:
patent: D251363 (1979-03-01), Henault et al.
patent: D291421 (1987-08-01), Zance
patent: D314243 (1991-01-01), Ueda
patent: D323403 (1992-01-01), Sinrod
patent: D325357 (1992-04-01), Worthington
patent: 4633232 (1986-12-01), Nelson et al.
Ackerman Roger C.
Dennison Eric H.
Ackerman Roger C.
Burke Wallace R.
Jackson Marcus
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