USD312651SExpiredUtility

Electronic keyboard musical instrument

80
Assignee: YAMAHA CORPPriority: Dec 10, 1987Filed: Jun 13, 1988Granted: Dec 4, 1990
Est. expiryDec 10, 2007(expired)· nominal 20-yr term from priority
Inventors:Yasuo Yamawaki
80
PatentIndex Score
20
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an electronic keyboard musical instrument, as shown.

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