Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Design Patent
1997-01-27
2001-08-28
Jackson, Marcus A. (Department: 2911)
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
Design Patent
active
D0447076
CLAIM:
The ornamental design for a whistle, as shown.
REFERENCES:
patent: D. 140756 (1945-04-01), Thompson
patent: D. 311878 (1990-11-01), Mingus et al.
patent: D. 330523 (1992-10-01), Killion
patent: D. 377383 (1997-01-01), Morocco
patent: D. 397634 (1998-09-01), Day
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