USD343307SExpiredUtility

Dust mask holder

61
Individually held — no corporate assignee on recordPriority: Feb 28, 1992Filed: Feb 28, 1992Granted: Jan 18, 1994
Est. expiryFeb 28, 2012(expired)· nominal 20-yr term from priority
Inventors:John O. Tennyson
61
PatentIndex Score
18
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a dust mask holder, as shown and described.

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