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Class Information
Number: 181/132
Name: Acoustics > Anatomic or prosthetic relation > Ear and mouth > Auditory canal insert > With diaphragm
Description: Subject matter including a flexible element which form part of a sound sensing device.










Patents under this class:

Patent Number Title Of Patent Date Issued
8567555 Dual bore canalphone system Oct. 29, 2013
8275140 Transducer for sensing actual or simulated body sounds Sep. 25, 2012
7864974 Earphone device integrated with microphone Jan. 4, 2011
7593534 Transducer for bioacoustic signals Sep. 22, 2009
7074296 In-ear hearing aid and method for its manufacture Jul. 11, 2006
6879696 In-ear hearing aid and method for its manufacture Apr. 12, 2005
6847720 Quick-updating stethoscope receiver Jan. 25, 2005
6768803 Method and apparatus for selective acoustic signal filtering Jul. 27, 2004
6378648 Diaphragm assembly for stethoscope chest piece Apr. 30, 2002
6307943 Electro-acoustic transducer and housing Oct. 23, 2001
5467775 Modular auscultation sensor and telemetry system Nov. 21, 1995
5222050 Water-resistant transducer housing with hydrophobic vent Jun. 22, 1993
5113967 Audibility earplug May. 19, 1992
5031219 Apparatus and method for conveying amplified sound to the ear Jul. 9, 1991
5022486 Sound reproducing apparatus Jun. 11, 1991
4995473 Stethoscope with diaphragm head adapter Feb. 26, 1991
4852683 Earplug with improved audibility Aug. 1, 1989
4809811 Ear pad construction for earphones Mar. 7, 1989
4540063 Sound wave attenuation device Sep. 10, 1985
4420657 Adjustable headset Dec. 13, 1983











 
 
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