Electronic whistle type alarm

Details Electronic whistle type alarm Electronic whistle type alarm

2007-04-03

2007-04-03

Spear, Robert M. (Department: 2913)

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Aural, i.e., audible

Design Patent

active

29219635

CLAIM:
The ornamental design for an electronic whistle type alarm, as shown and described.

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patent: D507759 (2005-07-01), Li
patent: D511705 (2005-11-01), Bandringa et al.
patent: 2004/0148745 (2004-08-01), Moeller et al.

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