USD494574SExpiredUtility

Headset amplifier

53
Assignee: HELLO DIRECT INCPriority: May 17, 2002Filed: May 17, 2002Granted: Aug 17, 2004
Est. expiryMay 17, 2022(expired)· nominal 20-yr term from priority
Inventors:Peter SchmidtJeffrey S. JonesJohn MagnascoRon Van ThielPaul Espinola
53
PatentIndex Score
9
Cited by
42
References
1
Claims

Claims

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

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