USD259817SExpiredUtility

Dust respirator

52
Assignee: AMERICAN CYANAMID COPriority: Sep 10, 1979Filed: Sep 10, 1979Granted: Jul 7, 1981
Est. expirySep 10, 1999(expired)· nominal 20-yr term from priority
Inventors:Willard C. White
52
PatentIndex Score
4
Cited by
4
References
1
Claims

Claims

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

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