USD413166SExpiredUtility

Face mask breathing valve

89
Assignee: GERSON CO INC LOUIS MPriority: Mar 2, 1998Filed: Mar 2, 1998Granted: Aug 24, 1999
Est. expiryMar 2, 2018(expired)· nominal 20-yr term from priority
Inventors:George A. SnowRobert A. Brunell
89
PatentIndex Score
41
Cited by
5
References
1
Claims

Claims

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

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