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Patent Assignment Details

NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Total properties: 15

Patent #:	5623544	Issue Dt:	04/22/1997	Application #:	08062595	Filing Dt:	05/17/1993
Title:	TELEPHONE HEADSET INTERFACE CIRCUIT

Patent #:	5544243	Issue Dt:	08/06/1996	Application #:	08288941	Filing Dt:	08/10/1994
Title:	TELEPHONE HEADSET INTERFACE CIRCUIT

Patent #:	6218384	Issue Dt:	04/17/2001	Application #:	08896301	Filing Dt:	06/30/1997
Title:	3-OXO-PYRIDO (1,2-A) BENZIMIDAZOLE-4-CARBOXYL AND 4-OXO-AZEPINO (1,2-A) BENZIMIDAZOLE-5-CARBOXYL DERIVATIVES USEFUL IN TREATING CENTRAL NERVOUS SYSTEM DISORDERS

Patent #:	6266424	Issue Dt:	07/24/2001	Application #:	08967930	Filing Dt:	11/12/1997
Title:	BATTERY CIRCUIT FOR ELECTRET MICROPHONE WITH UNIFORM PERFORMANCE

Patent #:	5978491	Issue Dt:	11/02/1999	Application #:	08968307	Filing Dt:	11/12/1997
Title:	CIRCUITRY FOR IMPROVING PERFORMANCE OF ELECTRET MICROPHONE

Patent #:	6504937	Issue Dt:	01/07/2003	Application #:	09115980	Filing Dt:	07/15/1998
Title:	AMPLIFIER CIRCUIT FOR ELECTRET MICROPHONE WITH ENHANCED PERFORMANCE

Patent #:	6137879	Issue Dt:	10/24/2000	Application #:	09130745	Filing Dt:	08/07/1998
Title:	COMPUTER TELEPHONY HEADSET AMPLIFIER

Patent #:	6580797	Issue Dt:	06/17/2003	Application #:	09335789	Filing Dt:	06/18/1999
Title:	AMPLIFIER CIRCUIT FOR ELECTRET MICROPHONE WITH ENHANCED PERFORMANCE

Patent #:	6731751	Issue Dt:	05/04/2004	Application #:	09634073	Filing Dt:	08/08/2000
Title:	APPARATUS FOR CORDLESS COMPUTER TELEPHONY

Patent #:	7187768	Issue Dt:	03/06/2007	Application #:	10793245	Filing Dt:	03/04/2004
Title:	APPARATUS FOR CORD-FREE HANDS-FREE TELEPHONY

Patent #:	D361766	Issue Dt:	08/29/1995	Application #:	29016220	Filing Dt:	12/10/1993
Title:	AUDIO RECORDER/PLAYER

Patent #:	D371554	Issue Dt:	07/09/1996	Application #:	29040831	Filing Dt:	06/28/1995
Title:	COMBINED PORTABLE AUDIO MESSAGE RECORDING AND PLAYBACK STATION

Patent #:	D393262	Issue Dt:	04/07/1998	Application #:	29055081	Filing Dt:	05/29/1996
Title:	PORTABLE INFORMATION STORING AND RETRIEVING DEVICE

Patent #:	D407402	Issue Dt:	03/30/1999	Application #:	29075014	Filing Dt:	08/11/1997
Title:	PORTABLE VOICE RECORDER

Patent #:	D406139	Issue Dt:	02/23/1999	Application #:	29075015	Filing Dt:	08/11/1997
Title:	PORTABLE VOICE RECORDER

Assignor

Exec Dt:

08/08/2007

Assignee

210 ESSEX STREET

SALEM, MASSACHUSETTS 01970

Correspondence name and address
	ADAM M. GRANDY
	111 HUNTINGTON AVENUE
	EDWARDS ANGELL PALMER & DODGE LLP
	BOSTON, MA 02199

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