METHOD AND DEVICE FOR DETECTING UNDERGROUND CABLES - Patent 0218669

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EP 0 218 669 A1

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(43)	Date of publication:
	22.04.1987 Bulletin 1987/17

(21)	Application number: 86902461.0

(22)	Date of filing: 21.04.1986

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International Patent Classification (IPC):

G01V 3/ 10^{( . )}
G01V 3/ 12^{( . )}

G01V 3/ 11^{( . )}

(86)	International application number:
	PCT/GB1986/000221

(87)	International publication number:
	WO 1986/006501 (06.11.1986 Gazette 1986/24)

(84)	Designated Contracting States:
	AT BE CH DE FR IT LI LU NL SE

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Priority:

19.04.1985 GB 19850010063

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

(72)	Inventor:
	RICHARDSON, Christopher, Keith Romsey Hampshire S05 OEX (GB)

(74)	Representative: Nicholson, Ronald
	Intellectual Property Department The Plessey Company plc 2-60 Vicarage Lane Ilford Essex IG1 4AQ Ilford Essex IG1 4AQ (GB)

(54)	METHOD AND DEVICE FOR DETECTING UNDERGROUND CABLES