USD310081SExpiredUtility

Headphone

Assignee: SONY CORPPriority: Jan 26, 1988Filed: Jan 26, 1988Granted: Aug 21, 1990
Est. expiryJan 26, 2008(expired)· nominal 20-yr term from priority
93
PatentIndex Score
61
Cited by
3
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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