Emergency vehicle warning system

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Lost child or person locator

Design Patent

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Design Patent

active

D0461137

CLAIM:
The ornamental design for a emergency vehicle warning system, as shown and described.

REFERENCES:
patent: 4238778 (1980-12-01), Ohsumi
patent: 4403208 (1983-09-01), Hodgson et al.
patent: D389757 (1998-01-01), Nishimura et al.
patent: 5757284 (1998-05-01), Trizzino et al.
patent: 5926112 (1999-07-01), Hartzell
patent: 6087961 (2000-07-01), Markow
patent: 6252521 (2001-06-01), Griffin et al.

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