USD249509SExpiredUtility

Acoustical transformer for coupling sound waves from the diaphragm to the throat of a horn-type loudspeaker

71
Assignee: ALTEC CORPPriority: Sep 23, 1976Filed: Sep 23, 1976Granted: Sep 19, 1978
Est. expirySep 23, 1996(expired)· nominal 20-yr term from priority
Inventors:Clifford A. Henricksen
71
PatentIndex Score
10
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a accoustical transformer for coupling sound waves from the diaphragm to the throat of a horn-type loudspeaker, as shown.

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