USD409744SExpiredUtility

Full face respirator lens

47
Assignee: MINNESOTA MINING & MFGPriority: Mar 5, 1997Filed: Mar 5, 1997Granted: May 11, 1999
Est. expiryMar 5, 2017(expired)· nominal 20-yr term from priority
Inventors:Vaughn B. GrannisDavid P. KnivslandJoseph G. ReischelGerald M. BrostromDavid C. Byram
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PatentIndex Score
6
Cited by
50
References
1
Claims

Claims

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

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