USD249072SExpiredUtility

Disposable respiratory mask

83
Assignee: AMERICAN OPTICAL CORPPriority: Nov 22, 1976Filed: Nov 22, 1976Granted: Aug 22, 1978
Est. expiryNov 22, 1996(expired)· nominal 20-yr term from priority
Inventors:William H. Revoir
83
PatentIndex Score
33
Cited by
3
References
1
Claims

Claims

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

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