(19)
(11) EP 0 635 137 A1

(12)

(43) Date of publication:
25.01.1995 Bulletin 1995/04

(21) Application number: 94902231.0

(22) Date of filing: 11.11.1993
(51) International Patent Classification (IPC): 
G05D 23/ 20( . )
H03L 1/ 04( . )
(86) International application number:
PCT/US1993/010932
(87) International publication number:
WO 1994/011763 (26.05.1994 Gazette 1994/12)
(84) Designated Contracting States:
DE DK FR GB IT NL

(30) Priority: 13.11.1992 US 19920975882

(71) Applicant: WESTERN ATLAS INTERNATIONAL, INC.
Houston, TX 77042-3115 (US)

(72) Inventor:
  • JONES, Kenneth, L.
    Houston, TX 77041 (US)

(74) Representative: Godsill, John Kenneth, et al 
Haseltine Lake & Co. Hazlitt House 28 Southampton Buildings Chancery Lane
London WC2A 1AT
London WC2A 1AT (GB)

   


(54) HIGH TEMPERATURE STABILIZED TIME BASE