(19)
(11)
EP 0 444 034 A1
(12)
(43)
Date of publication:
04.09.1991
Bulletin 1991/36
(21)
Application number:
89906865.0
(22)
Date of filing:
31.05.1989
(51)
International Patent Classification (IPC):
H04R
9/
00
( . )
H04R
7/
22
( . )
H04R
9/
04
( . )
H04R
7/
12
( . )
H04R
9/
02
( . )
H04R
9/
06
( . )
(86)
International application number:
PCT/US1989/002374
(87)
International publication number:
WO 1990/004317
(
19.04.1990
Gazette 1990/09)
(84)
Designated Contracting States:
DE FR GB IT SE
(30)
Priority:
03.10.1988
US 19880251836
(71)
Applicant:
HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
Northridge, CA 91329 (US)
(72)
Inventor:
HOUSE, William, Neal
Bloomington, IN 47401 (US)
(74)
Representative:
Barlow, Roy James, et al
J.A. KEMP & CO. 14, South Square Gray's Inn
London WC1R 5LX
London WC1R 5LX (GB)
(54)
ELECTRODYNAMIC TRANSDUCER STRUCTURE