Hand held electronic sports whistle with penalty lights

Details Hand held electronic sports whistle with penalty lights Hand held electronic sports whistle with penalty lights

1999-10-10

2000-08-22

Jackson, Marcus A.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Aural, i.e., audible

D26 38, 1005

Patent

active

D04296567

REFERENCES:
patent: D247519 (1978-03-01), Rieselman et al.
patent: D302398 (1989-07-01), Medina
patent: D313364 (1991-01-01), Synnergren
patent: D350908 (1994-09-01), Jamey
patent: D356968 (1995-04-01), Flick
patent: D365854 (1996-01-01), Mathews
patent: D388007 (1997-12-01), Koski
patent: 4744013 (1988-05-01), Lee et al.
patent: 5276593 (1994-01-01), Lighthill
patent: 5557294 (1996-09-01), Leslie
patent: 5617075 (1997-04-01), Worth

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