ACTIVE ACOUSTIC TRANSMISSION LOSS BOX - Patent 0664044

(19)

(11)

EP 0 664 044 A1

(12)

(43)	Date of publication:
	26.07.1995 Bulletin 1995/30

(21)	Application number: 93904473.0

(22)	Date of filing: 08.10.1992

(51)

International Patent Classification (IPC):

G10K 11/ 178^{( . )}

(86)	International application number:
	PCT/US1992/008401

(87)	International publication number:
	WO 1994/009484 (28.04.1994 Gazette 1994/10)

(84)	Designated Contracting States:
	BE DE DK FR GB IT NL SE

(71)	Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.
	Linthicum, MD 21090 (US)

(72)	Inventors:
	FULLER, Chris Blacksburg, VA 24060 (US) McLOUGHLIN, Michael Sykesville, MD 21784 (US) HILDEBRAND, Steve Arlington, VA 22202 (US)

(74)	Representative: Stone, Patrick
	28 Edenside Drive Attleborough Norfolk NR17 2EL Attleborough Norfolk NR17 2EL (GB)

(54)	ACTIVE ACOUSTIC TRANSMISSION LOSS BOX