USD297011SExpiredUtility

Plug-mounted background noise amplifier

32
Individually held — no corporate assignee on recordPriority: Apr 25, 1985Filed: Apr 25, 1985Granted: Aug 2, 1988
Est. expiryApr 25, 2005(expired)· nominal 20-yr term from priority
Inventors:William D. QuigleyPhilip H. Nelson
32
PatentIndex Score
2
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a plug-mounted background noise amplifier, as shown and described.

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