USD472229SExpiredUtility

Sound amplifier

Assignee: YAMAHA CORPPriority: Aug 4, 2000Filed: Jan 31, 2001Granted: Mar 25, 2003
Est. expiryAug 4, 2020(expired)· nominal 20-yr term from priority
Inventors:Eizo Amiya
67
PatentIndex Score
15
Cited by
4
References
1
Claims

Claims

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

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