(19)

(11)

EP 0 745 227 A1

(12)

(43) Date of publication: 04.12.1996 Bulletin 1996/49 (21) Application number: 94917877.0 (22) Date of filing: 14.02.1994

(51) International Patent Classification (IPC):  G01S 7/ 526( . ) G01S 7/ 534( . ) G01S 7/ 523( . ) H04B 11/ 00( . ) (86) International application number: PCT/US1994/001601 (87) International publication number: WO 1995/022065 (17.08.1995 Gazette 1995/35)

(84) Designated Contracting States: DE FR GB (71) Applicant: Garde, Lawrence Bloomington, MN 55438 (US)	(72) Inventor: Garde, Lawrence Bloomington, MN 55438 (US) (74) Representative: Geoffrey Owen & Company  76 Lower Bridge Street Chester CH1 1RU Chester CH1 1RU (GB)