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(11)

EP 1 668 957 A1

(12)

(43) Date of publication: 14.06.2006 Bulletin 2006/24 (21) Application number: 03752583.9 (22) Date of filing: 25.09.2003

(51) International Patent Classification (IPC):  H04R 25/00(1968.09) (86) International application number: PCT/US2003/030045 (87) International publication number: WO 2005/041617 (06.05.2005 Gazette 2005/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR (71) Applicants: In'Tech Industries, Inc. Ramsey, MN 55303 (US) Interton USA Plymouth, MN 55441 (US)	(72) Inventors: STEVENS, Randal Alan Hanover, MN 55341 (US) VASSSERMAN, Remir M. St. Paul, MN 55105 (US) (74) Representative: Beresford, Keith Denis Lewis  Beresford & Co., 16 High Holborn London WC1V 6BX London WC1V 6BX (GB)