USD319241SExpiredUtility

Headphone

91
Assignee: SONY CORPPriority: Apr 14, 1989Filed: Apr 14, 1989Granted: Aug 20, 1991
Est. expiryApr 14, 2009(expired)· nominal 20-yr term from priority
Inventors:Takefumi DaidoAkira YamazakiKatsumi Yamatogi
91
PatentIndex Score
36
Cited by
5
References
1
Claims

Claims

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

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