(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