(19)

(11)

EP 0 748 505 A1

(12)

(43) Date of publication: 18.12.1996 Bulletin 1996/51 (21) Application number: 94913891.0 (22) Date of filing: 04.03.1994

(51) International Patent Classification (IPC):  G11B 7/ 12( . ) G11B 23/ 03( . ) (86) International application number: PCT/US1994/002350 (87) International publication number: WO 1995/024039 (08.09.1995 Gazette 1995/38)

(84) Designated Contracting States: DE FR GB (71) Applicant: MARTIN, Robert D. Salem, NH 03079 (US)	(72) Inventor: MARTIN, Robert D. Salem, NH 03079 (US) (74) Representative: Marsh, Roy David, et al  Hoffmann Eitle & Partner Patent- und Rechtsanwälte Arabellastrasse 4 81925 München 81925 München (DE)