(19)

(11)

EP 0 791 123 A1

(12)

(43) Date of publication: 27.08.1997 Bulletin 1997/35 (21) Application number: 95903542.0 (22) Date of filing: 15.11.1994

(51) International Patent Classification (IPC):  E05B 73/ 00( . ) G08B 13/ 22( . ) G06F 1/ 16( . ) (86) International application number: PCT/US1994/013212 (87) International publication number: WO 1996/015347 (23.05.1996 Gazette 1996/23)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (60) Divisional application: 00106042.5 / 1028212 (71) Applicant: KENSINGTON MICROWARE LIMITED San Mateo, CA 94403 (US)	(72) Inventors: MURRAY, William, R., Jr. Redwood City, CA 94065 (US) CARL, Steward, R. Palo Alto, CA 94306 (US) ZARNOWITZ, Arthur, H. Burlingame, CA 94010 (US) (74) Representative: Waldren, Robin Michael, et al  MARKS & CLERK, 57-60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)