USD254616SExpiredUtility

Head phone

Assignee: SANSUI ELECTRIC COPriority: May 19, 1977Filed: Sep 8, 1977Granted: Apr 1, 1980
Est. expiryMay 19, 1997(expired)· nominal 20-yr term from priority
Inventors:Hiroshi Tabata
99
PatentIndex Score
99
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a head phone, as shown.

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