USD286635SExpiredUtility

Telephone amplifier

49
Assignee: JOHN MFG LTDPriority: Feb 15, 1984Filed: Jul 16, 1984Granted: Nov 11, 1986
Est. expiryFeb 15, 2004(expired)· nominal 20-yr term from priority
Inventors:John S. Yuen
49
PatentIndex Score
4
Cited by
12
References
1
Claims

Claims

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

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