Protective helmet

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

Design Patent

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Design Patent

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D0519683

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

REFERENCES:
patent: D200757 (1965-04-01), Hiatt et al.
patent: D207900 (1967-06-01), Feldmann et al.
patent: 3858242 (1975-01-01), Gooding
patent: D253197 (1979-10-01), Jarvinen
patent: D272199 (1984-01-01), Rudd
patent: 4475248 (1984-10-01), L'Abbe et al.
patent: 4498202 (1985-02-01), Yamamoto
patent: D283940 (1986-05-01), Bally
patent: D320477 (1991-10-01), Hassfuther
patent: D323042 (1992-01-01), Gallet
patent: D323225 (1992-01-01), Gallet
patent: D397519 (1998-08-01), Crupi et al.
patent: 5946719 (1999-09-01), Crupi et al.
patent: 6298498 (2001-10-01), Burns et al.
patent: D459837 (2002-07-01), Dupuis
patent: D473975 (2003-04-01), Batts
patent: 6622311 (2003-09-01), Diaz et al.
patent: 31 45 106 (1981-11-01), None
patent: 1 166 666 (2002-01-01), None

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