USD320868SExpiredUtility

Gas mask

59
Assignee: KUMAGAI AKIRAPriority: Nov 16, 1989Filed: Nov 16, 1989Granted: Oct 15, 1991
Est. expiryNov 16, 2009(expired)· nominal 20-yr term from priority
Inventors:Akira KumagaiHitoshi Kumagai
59
PatentIndex Score
8
Cited by
3
References
1
Claims

Claims

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

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