(19)
(11) EP 0 221 125 A1

(12)

(43) Date of publication:
13.05.1987 Bulletin 1987/20

(21) Application number: 86902863.0

(22) Date of filing: 01.05.1986
(51) International Patent Classification (IPC): 
F16L 9/ 02( . )
H05K 7/ 20( . )
H02G 3/ 03( . )
(86) International application number:
PCT/GB1986/000233
(87) International publication number:
WO 1986/006574 (06.11.1986 Gazette 1986/24)
(84) Designated Contracting States:
DE FR IT NL

(30) Priority: 02.05.1985 GB 19850011198

(71) Applicant: PLESSEY OVERSEAS LIMITED
Ilford Essex IG1 4AQ (GB)

(72) Inventor:
  • RUSSELL, Martin, John 41 Whitestone Road
    Somerset BA11 2DW (GB)

(74) Representative: Johnson, Reginald George 
The Plessey Company plc Intellectual Property Department Vicarage Lane
Ilford Essex IG1 4AQ
Ilford Essex IG1 4AQ (GB)

   


(54) IMPROVEMENTS IN OR RELATING TO AIR DUCTS