(19)

(11)

EP 0 988 773 A1

(12)

(43) Date of publication: 29.03.2000 Bulletin 2000/13 (21) Application number: 98924945.3 (22) Date of filing: 28.05.1998

(51) International Patent Classification (IPC)7: H04R 5/00 (86) International application number: PCT/US9810/865 (87) International publication number: WO 9854/926 (03.12.1998 Gazette 1998/48)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 28.05.1997 US 47824 P (71) Applicant: Bauck, Jerald L. Tempe, AZ 85283 (US)	(72) Inventor: Bauck, Jerald L. Tempe, AZ 85283 (US) (74) Representative: Ottevangers, Sietse Ulbe et al Vereenigde OctrooibureauxNieuwe Parklaan 97 2587 BN 's-Gravenhage 2587 BN 's-Gravenhage (NL)