Electro Audio Dynamics, Inc.

Also on record

Records under this name other than patents Electro Audio Dynamics, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.

Showing 1 to 7 of 7 · Back to Electro Audio Dynamics, Inc.

Patent	Title	Status	Expires	Confidence
US 4,037,061	Planar pattern voice coil audio transducer Formerly held Term ended Term ended no later than Jul 19, 1997 · Low confidence	Term ended	Term ended no later than Jul 19, 1997	Low confidence
US 4,237,905	Automatic tympanometric testing means Term ended Term ended no later than Dec 9, 2000 · Low confidence	Term ended	Term ended no later than Dec 9, 2000	Low confidence
US 4,246,453	Switch Term ended Term ended no later than Jan 20, 2001 · Low confidence	Term ended	Term ended no later than Jan 20, 2001	Low confidence
US 4,327,250	Dynamic speaker equalizer Formerly held Term ended Term ended no later than Apr 27, 2002 · Low confidence	Term ended	Term ended no later than Apr 27, 2002	Low confidence
US 4,383,134	Loudspeaker systems Term ended Term ended no later than May 10, 2003 · Low confidence	Term ended	Term ended no later than May 10, 2003	Low confidence
US 4,406,921	Apparatus for improving linearity of electromechanical transducers Term ended Term ended no later than Sep 27, 2003 · Low confidence	Term ended	Term ended no later than Sep 27, 2003	Low confidence
US 4,429,702	Apparatus for measurement of acoustic volume Term ended Term ended no later than Feb 7, 2004 · Low confidence	Term ended	Term ended no later than Feb 7, 2004	Low confidence