Protective helmet mask

Equipment for safety – protection – and rescue – Body restraint or protective covering – Element or attachment

Design Patent

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Design Patent

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D0517250

CLAIM:
I claim the ornamental design for a protective helmet mask, as shown and described.

REFERENCES:
patent: D289568 (1987-04-01), Nimmons
patent: D289569 (1987-04-01), Nimmons
patent: D298868 (1988-12-01), Klindt
patent: D358686 (1995-05-01), Kraemer
patent: D381127 (1997-07-01), Rothwell
patent: D463885 (2002-10-01), Burns
patent: D480839 (2003-10-01), Hicks, Jr.
patent: 6708339 (2004-03-01), Smith, Jr.
patent: 6763524 (2004-07-01), Halstead et al.

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