| Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486) |
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| 01/13/1993 | EP0522352A2 Process for bonding the moving coil carrier with the membrane of a loudspeaker |
| 01/12/1993 | US5179595 Electrodynamic-fluidic transducer element for pneumatic loudspeaker |
| 12/16/1992 | EP0518041A1 Ventilated loudspeaker |
| 12/15/1992 | US5172092 Selective call receiver having audible and tactile alerts |
| 12/10/1992 | WO1992022177A1 Audio transducer improvements |
| 12/10/1992 | WO1992022175A1 Magnetic drive system for loudspeaker |
| 12/10/1992 | CA2109711A1 Loudspeaker |
| 12/09/1992 | EP0517497A2 Earphone |
| 12/09/1992 | CN2124535U Multifunction loudspeaker |
| 12/02/1992 | EP0516471A1 Magnetic drive system for loudspeaker |
| 11/26/1992 | WO1992021217A1 Flow-through air-cooled loudspeaker system |
| 11/24/1992 | US5166984 Loudspeaker |
| 11/24/1992 | US5166982 Horn speaker having a cooling device |
| 10/28/1992 | EP0510345A2 Loudspeaker for use in a vehicle |
| 10/28/1992 | CN2120418U Loudspeaker |
| 10/21/1992 | CN2119734U Loadspeaker |
| 10/20/1992 | US5157731 Dome radiator speaker |
| 10/14/1992 | EP0508570A2 Permanent magnet transducer |
| 10/14/1992 | CN2119059U Speaker mounted to car |
| 10/13/1992 | US5155773 Electrodynamic transducer including inset |
| 10/13/1992 | CA1308804C Electro acoustic transducer and loudspeaker |
| 09/30/1992 | EP0505382A1 Coil assemblies. |
| 09/29/1992 | US5151943 Low distortion dynamic loudspeaker |
| 09/22/1992 | US5150419 Calotte-type treble loudspeaker |
| 09/22/1992 | US5150418 Speaker system |
| 09/22/1992 | US5148888 Ribbon transducers |
| 09/16/1992 | EP0503860A2 Transducer motor assembly |
| 09/15/1992 | US5148493 Loudspeaker structure |
| 09/15/1992 | US5148492 Diaphragm of dynamic microphone |
| 09/12/1992 | CA2061444A1 Permanent magnet transducer |
| 09/01/1992 | US5143169 Loudspeaker diaphragm provided with a rear load |
| 08/25/1992 | US5142508 Aquatic transducer system |
| 08/25/1992 | US5142260 Transducer motor assembly |
| 08/19/1992 | CN2113582U Microphone sound head yoke improved structure |
| 08/05/1992 | EP0496802A1 Improvements in or relating to loudspeakers. |
| 08/05/1992 | CN2112044U Autoamtic damper |
| 07/29/1992 | CN2111606U Single magnet steel coaxial double-frequence combined loudspeaker |
| 07/08/1992 | EP0493450A1 Planar speakers |
| 07/07/1992 | US5129005 Electrodynamic loudspeaker |
| 07/01/1992 | EP0493361A2 Telephone-handset fitted with a directional microphone |
| 07/01/1992 | EP0492142A2 Driver system for an extended-travel bass loudspeaker |
| 07/01/1992 | CN2109035U Contectless electric loudspeaker |
| 06/30/1992 | US5127060 Centering device for speaker diaphragm |
| 06/23/1992 | US5125033 Body sense speaker |
| 06/23/1992 | US5125031 Speaker system with focused vibration |
| 06/16/1992 | US5123053 Loudspeaker suspension |
| 05/29/1992 | WO1992009180A1 Loudspeaker with coated voice coil |
| 05/20/1992 | EP0486254A2 Low distortion dynamic loudspeaker |
| 05/20/1992 | CN2105158U Speaker with in-laid magnetism |
| 05/06/1992 | EP0483185A1 Electrodynamic sound generator for a hearing aid |
| 05/06/1992 | CN1016550B Double-winding voice-coil speaker and its power amplifier circuit |
| 04/30/1992 | WO1992007449A1 Sound output device |
| 04/29/1992 | CN1060754A Ball type vibration membrane loudspeaker |
| 04/16/1992 | WO1992006569A1 Electrodynamic loudspeaker with cooling arrangement |
| 04/15/1992 | EP0480160A2 Dome-shaped high-frequency loudspeaker |
| 04/08/1992 | EP0479317A2 Method of manufacturing a loudspeaker damper and loudspeakerdämper resulting from such method |
| 04/08/1992 | EP0478979A2 Electrodynamic loudspeaker |
| 03/18/1992 | CN2099420U Small size snai/speaker able to be disassembled and repaircd |
| 03/11/1992 | CN2098776U Contactles electronic loudspeaker |
| 02/26/1992 | EP0471990A2 Double-coil loudspeaker |
| 02/25/1992 | US5091028 Method for manufacturing a heat resistant voice coil |
| 02/20/1992 | WO1992003024A1 Panel-form loudspeaker |
| 01/22/1992 | EP0467016A2 Magnetic circuit for a speaker |
| 01/21/1992 | CA2038185A1 Magnetic circuit for a speaker |
| 01/16/1992 | DE4021000A1 HI=FI loudspeaker with sprung coupling member - has mechanical oscillation element controlled by movement of electrical conductor within magnetic field |
| 01/14/1992 | US5081684 Shallow loudspeaker with slotted magnet structure |
| 01/14/1992 | US5081683 Loudspeakers |
| 01/12/1992 | WO1992001359A1 Loudspeaker suspension |
| 01/10/1992 | CA2020775A1 Electromagnetic vibrators |
| 12/27/1991 | EP0313560B1 Membrane system with flexion-resistant rotationally symmetric plate for use as a sound reflecting or receiving element |
| 12/17/1991 | US5073948 Midrange loudspeaker driver |
| 12/12/1991 | DE4105067A1 Magnet for electrodynamic transducer i.e. loudspeaker - has cylindrical magnetic core surrounded by second magnet and opposite magnetic poles |
| 12/03/1991 | US5070530 Electroacoustic transducers with increased magnetic stability for distortion reduction |
| 11/19/1991 | CA1292307C Cone loudspeakers |
| 11/14/1991 | WO1991017636A1 Improvements in or relating to loudspeakers |
| 10/29/1991 | US5062140 Induction speaker |
| 10/23/1991 | EP0453230A2 Speaker system |
| 10/23/1991 | EP0453130A2 Inductively activated loudspeaker with conductive tube |
| 10/19/1991 | CA2040092A1 Inductively activated loudspeaker with conductive tube |
| 10/15/1991 | US5058173 Combination inertia type audio transducer and loudspeaker |
| 09/25/1991 | CN2085588U Throat cover integrated loud-speaker |
| 09/19/1991 | WO1991014350A1 Microphone operating on body-borne noise |
| 09/18/1991 | EP0446515A2 Dynamic microphone and method of making the same |
| 09/18/1991 | CN2085125U Microphone |
| 09/12/1991 | DE4007678A1 Dynamic electroacoustic transducer for radio telephone handpiece - has housing receiving insert containing magnetic system and providing support face for membrane edge |
| 09/04/1991 | EP0444034A1 Electrodynamic transducer structure |
| 09/04/1991 | EP0441881A4 Shallow loudspeaker with slotted magnet structure |
| 08/28/1991 | CN2083822U Dynamic plane loudspeaker |
| 08/28/1991 | CN1054166A High-fidelity moving-coil lowdspeaker |
| 08/28/1991 | CN1013726B Loudspeaker |
| 08/28/1991 | CN1013725B Plate loudspeaker |
| 08/21/1991 | EP0441881A1 Shallow loudspeaker with slotted magnet structure. |
| 08/21/1991 | CN2083371U Composite microphone with feedback device |
| 08/21/1991 | CN1013635B Loudspeaker |
| 08/20/1991 | US5042072 Self-cooled loudspeaker |
| 08/14/1991 | CN2082935U Bugle type loudspeaker |
| 08/13/1991 | US5040221 Compact electroacoustical transducing with flat conducting tinsel leads crimped to voice coil ends |
| 07/16/1991 | US5033093 Compact microphone and method of manufacture |
| 07/11/1991 | DE4037648A1 Electrodynamic loudspeaker with no movable connections - conveys signals between transformer and external circuitry under principle of magnetic induction |
| 07/10/1991 | EP0356433A4 Shallow loudspeaker |