USD312461SExpiredUtility

Inter-call device for telephone sets

Assignee: TOSHIBA KKPriority: Dec 24, 1988Filed: Jun 2, 1989Granted: Nov 27, 1990
Est. expiryDec 24, 2008(expired)· nominal 20-yr term from priority
Inventors:Takaharu Ando
74
PatentIndex Score
14
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an inter-call device for telephone sets, as shown.

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