USD304564SExpiredUtility

Attendant telephone switchboard

89
Assignee: MEISEI ELECTRIC CO LTDPriority: Dec 1, 1986Filed: May 19, 1987Granted: Nov 14, 1989
Est. expiryDec 1, 2006(expired)· nominal 20-yr term from priority
Inventors:Shigeaki KidoSadao IsozakiYasuko Yajima
89
PatentIndex Score
32
Cited by
11
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an attendant telephone switchboard, as shown and described.

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