Four speaker remote acoustic hailing device

Details Four speaker remote acoustic hailing device Four speaker remote acoustic hailing device

2008-04-21

2009-06-09

Veynar, Caron (Department: 2913)

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Aural, i.e., audible

Design Patent

active

D0593887

CLAIM:
The ornamental design for a four-speaker remote acoustic hailing device, as shown and described.

REFERENCES:
patent: 5160815 (1992-11-01), Prater
patent: D395047 (1998-06-01), Segan et al.
patent: D468718 (2003-01-01), Cuvelier
patent: D502460 (2005-03-01), Ueda et al.
patent: D508907 (2005-08-01), Ueda et al.
patent: D542264 (2007-05-01), Amid-Hozour
patent: 2003/0063754 (2003-04-01), Mears
patent: 2005/0013454 (2005-01-01), Huang

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