(19)

(11)

EP 1 393 493 A1

(12)

(43) Date of publication: 03.03.2004 Bulletin 2004/10 (21) Application number: 01984200.4 (22) Date of filing: 05.07.2001

(51) International Patent Classification (IPC)7: H04L 9/00 (86) International application number: PCT/US2001/021038 (87) International publication number: WO 2002/005478 (17.01.2002 Gazette 2002/03)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 09.07.2000 US 217151 P (71) Applicant: Black, Gerald R. Southfield, MI 48076 (US)	(72) Inventor: Black, Gerald R. Southfield, MI 48076 (US) (74) Representative: Brunner, Michael John  GILL JENNINGS & EVERY,Broadgate House,7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)