(19)

(11)

EP 0 390 779 A1

(12)

(43) Date of publication: 10.10.1990 Bulletin 1990/41 (21) Application number: 88907488.0 (22) Date of filing: 20.06.1988

(51) International Patent Classification (IPC):  G01S 13/ 74( . ) G08B 13/ 24( . ) G06K 7/ 08( . ) (86) International application number: PCT/US1988/002123 (87) International publication number: WO 1989/012877 (28.12.1989 Gazette 1989/30)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicant: LICHTBLAU, George J. Ridgefield CT 06877 (US)	(72) Inventor: LICHTBLAU, George J. Ridgefield CT 06877 (US) (74) Representative: Smulders, Theodorus A.H.J., Ir., et al  Vereenigde Octrooibureaux Nieuwe Parklaan 97 NL-2587 BN 's-Gravenhage NL-2587 BN 's-Gravenhage (NL)