USD250496SExpiredUtility

Head seal for an anti-dust helmet

Assignee: ODELL RAYMONDPriority: Aug 8, 1976Filed: Jan 7, 1977Granted: Dec 12, 1978

Est. expiryAug 8, 1996(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a head seal for an anti-dust helmet, as shown.

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