(19)
(11) EP 0 636 245 A1

(12)

(43) Date of publication:
01.02.1995 Bulletin 1995/05

(21) Application number: 94905806.0

(22) Date of filing: 08.02.1994
(51) International Patent Classification (IPC): 
G01N 5/ 02( . )
G01N 27/ 00( . )
(86) International application number:
PCT/GB1994/000233
(87) International publication number:
WO 1994/018551 (18.08.1994 Gazette 1994/19)
(84) Designated Contracting States:
CH DE FR GB IT LI NL

(30) Priority: 12.02.1993 GB 19930002782

(71) Applicant: GEC-MARCONI LIMITED
Stanmore, Middlesex HA7 4LY (GB)

(72) Inventors:
  • FREEMAN, Neville John
    North Marston, Buckinghamshire MK18 3GF (GB)
  • MAY, Iain Peter
    Harrow, Middlesex HA2 9SE (GB)
  • WEIR, Donald James
    CH-6331 Hunenberg (CH)

(74) Representative: Pope, Michael Bertram Wingate 
The General Electric Company, p.l.c. GEC Patent Department Waterhouse Lane
Chelmsford, Essex CM1 2QX
Chelmsford, Essex CM1 2QX (GB)

   


(54) GAS SENSING DEVICES