A CIRCUIT FOR USE WITH MICROPHONES - Patent 0613603

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EP 0 613 603 A1

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(43)	Date of publication:
	07.09.1994 Bulletin 1994/36

(21)	Application number: 92923526.0

(22)	Date of filing: 16.11.1992

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International Patent Classification (IPC):

H04R 3/ 00^{( . )}

(86)	International application number:
	PCT/GB1992/002127

(87)	International publication number:
	WO 1993/010613 (27.05.1993 Gazette 1993/13)

(84)	Designated Contracting States:
	DE FR GB IT

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Priority:

18.11.1991 GB 19910024471

(71)	Applicant: HURFORD, Peter John
	Launceston, Cornwall P15 8LW (GB)

(72)	Inventor:
	HURFORD, Peter John Launceston, Cornwall P15 8LW (GB)

(74)	Representative: Rackham, Anthony Charles, et al
	Lloyd Wise, Tregear & Co. Norman House 105-109 Strand London WC2R 0AE London WC2R 0AE (GB)

(54)	A CIRCUIT FOR USE WITH MICROPHONES