USD331988SExpiredUtility
Mask
Individually held — no corporate assignee on recordPriority: Aug 22, 1991Filed: Aug 22, 1991Granted: Dec 22, 1992
Est. expiryAug 22, 2011(expired)· nominal 20-yr term from priority
Inventors:Allan R. Markert
70
PatentIndex Score
16
Cited by
20
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a mask, as shown and described.
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