| Patents for G10K 9 - Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers (3,562) |
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| 07/10/1990 | US4941202 Multiple segment flextensional transducer shell |
| 06/06/1990 | CN2058031U Miniature dc sonic device |
| 06/05/1990 | US4932008 Hinge-modified flextensional transducer |
| 05/29/1990 | US4928671 Shock wave generator for generating an acoustical shock wave pulse |
| 05/23/1990 | CN2057528U Anti-theft type electronic door bell |
| 05/15/1990 | US4924858 Electromagnetic shockwave generator transducer |
| 05/09/1990 | EP0367681A1 Flextensional transducer |
| 05/01/1990 | US4922470 Barrel stave projector |
| 05/01/1990 | US4920955 Shock wave source |
| 04/19/1990 | WO1990003852A1 Electrodynamic pulse emitter |
| 04/17/1990 | US4918738 Structural assembly for housing an acoustical system |
| 04/11/1990 | EP0363032A2 Flextensional transducers |
| 04/10/1990 | US4915114 Shock wave source having central locating system & disposed in a cavity free of shock waves |
| 04/10/1990 | US4915054 Warning device for a bicycle |
| 04/04/1990 | EP0360806A1 Air-driven low-frequency sound generator with positive feedback system. |
| 03/29/1990 | DE3831826C1 Horn |
| 03/13/1990 | US4908601 Loud speaker with horizontal radiation pattern |
| 03/06/1990 | US4907207 Ultrasound transducer having astigmatic transmission/reception characteristic |
| 03/06/1990 | US4905675 Shock wave generator for an extracorporeal lithotripsy device |
| 02/21/1990 | CN2053364U Household multifunctional electronic door bell |
| 02/20/1990 | US4901709 For extra corporeal lithotripsy treatment of calculi in a patient |
| 02/13/1990 | US4901293 Rare earth flextensional transducer |
| 01/31/1990 | CN2052137U Aatomatic sound-changeable contactless electronic loudspeaker |
| 01/18/1990 | DE3923400A1 Toy animal with sound box - has elastically deformable housing with locking valve with guide tube and support disc |
| 01/16/1990 | US4894811 Outboard-driven flextensional transducer |
| 01/11/1990 | WO1990000093A1 Low frequency sound generator, especially for grills |
| 01/03/1990 | CN2050651U Adjustable sound device of buzzer |
| 01/03/1990 | CN2050650U Anti-theft alarm door bell |
| 12/05/1989 | US4884523 Vehicle warning system |
| 11/29/1989 | CN2048612U Four function electronic door bell warner |
| 11/22/1989 | CN2048227U Dual-purpose door bell |
| 11/14/1989 | US4879993 Shock wave source for generating a short initial pressure pulse |
| 11/08/1989 | EP0340674A2 Flextensional sonar transducer assembly |
| 11/08/1989 | EP0236460B1 Compressed-air horn |
| 11/07/1989 | US4878488 Shock wave tube with long service life |
| 11/02/1989 | WO1989010677A1 Flextensional transducer |
| 10/25/1989 | CN2046669U Electronic apparatus for driving out mosquito |
| 10/25/1989 | CN2046668U Non-contact electronic switch for horn |
| 10/18/1989 | EP0337067A2 Signalhorn, in particular for vehicles |
| 10/18/1989 | CN2046261U Mini-size acoustic control device |
| 10/17/1989 | US4875199 Deep water transient sound generator |
| 10/11/1989 | CN2045882U Answer combined door bell |
| 10/05/1989 | WO1989009531A1 Electro-mechanical transduction apparatus |
| 10/04/1989 | CN2045536U Tuning fork device without adjustment commotion |
| 09/26/1989 | US4869349 Flexcompressional acoustic transducer |
| 09/20/1989 | EP0333055A2 Piezoelectric buzzer and a method of manufacturing the same |
| 09/20/1989 | CN2044758U Sweet box with photo-controlled electronic music |
| 09/20/1989 | CN2044507U Circuit for electro-sounding cat |
| 09/05/1989 | US4864548 Flextensional transducer |
| 08/30/1989 | CN2043811U Car loudspeaker regulated with transistors |
| 08/29/1989 | US4862429 Flextensional electroacoustic transducer with hydrostatically compression-loaded driver |
| 07/04/1989 | US4845688 Electro-mechanical transduction apparatus |
| 07/04/1989 | US4845687 Flextensional sonar transducer assembly |
| 06/29/1989 | DE3742500A1 Shock wave generator for contactless destruction of concrements, and method for producing it |
| 06/28/1989 | EP0321759A2 Electromagnetic shock waves source |
| 06/20/1989 | US4841493 Electronic acoustic signal emitter |
| 06/13/1989 | US4838248 Shock wave head for non-contacting disintegration of calculi |
| 06/06/1989 | CA1255360A1 Apparatus for contactless fragmentation of concrements in vivo |
| 05/31/1989 | CN2038654U Door bell type direction indicator |
| 05/30/1989 | US4834074 Safety system for a shock wave generator |
| 05/24/1989 | EP0317507A1 Apparatus for acting by means of ultrasonic vibrations upon an object |
| 05/16/1989 | US4829930 Pneumatic horn |
| 05/02/1989 | US4825800 Marine horn installation |
| 04/26/1989 | EP0312848A1 Shock wave source with a centrally disposed position determination system |
| 04/26/1989 | EP0312847A1 Shock wave source incorporating a central ultrasonic position determination system |
| 04/18/1989 | US4823110 Tone generator with improved diaphragm mounting |
| 04/11/1989 | US4821257 Electricity supply structure for a piezoelectric vibrator |
| 04/11/1989 | US4821245 Electromagnetic transducer |
| 04/05/1989 | CN2035549U Remote switch for ac power supply |
| 03/29/1989 | EP0308931A2 Ultrasonic transducer with astigmatic transmission-reception characteristics |
| 03/29/1989 | EP0308899A2 Ultrasonic transducer with astigmatic transmission-reception characteristics |
| 03/21/1989 | US4813123 Method of adjusting an electric horn air gap |
| 03/13/1989 | EP0207095A4 A rare earth flextensional transducer. |
| 03/01/1989 | CN2033537U Synchro-flash, musical electronic door-bell and toy |
| 02/28/1989 | US4807627 Contactless comminution of concrements |
| 02/28/1989 | CA1250654A1 Acoustic switch |
| 02/21/1989 | US4805732 Motor powered sound emitter |
| 02/08/1989 | EP0302258A1 Signalling horn |
| 01/31/1989 | US4802068 Foamed silicone |
| 01/24/1989 | US4799913 Game call having a two-diaphragm sounder and lip structure |
| 01/11/1989 | EP0298334A1 Shock wave generator |
| 01/10/1989 | US4797863 Underwater acoustical transducer |
| 01/10/1989 | US4796608 Shock wave generator for an apparatus for non-contacting disintegration of calculi in the body of a life form |
| 01/10/1989 | US4796503 Amplification circuit for electronic tone generator |
| 01/04/1989 | EP0297189A1 Ultrasonic transducers |
| 01/04/1989 | EP0297101A1 Flextensional transducers. |
| 01/04/1989 | EP0297100A1 Sonar transducers. |
| 01/04/1989 | CN2030361U Electric music door bell with disoriminator and theft-proof alarm |
| 01/04/1989 | CN2030360U Energy-saving music door bell |
| 01/03/1989 | US4796009 Electronic warning apparatus |
| 01/03/1989 | US4794914 Shock wave generator for an apparatus for non-contacting disintegration of calculi in the body of a life form |
| 12/28/1988 | CN87217104U Electric trumpet for vehicle |
| 12/27/1988 | US4793329 For treating calculi disposed in the body of a patient |
| 12/07/1988 | CN87203633U Multi-functional sound (light) reporting device |
| 11/30/1988 | CN87217148U Electronic birdsong device |
| 11/08/1988 | US4782821 Shock wave generator for an installation for non-contacting disintegration of calculi in the body of a life form |
| 11/02/1988 | EP0289264A1 Electromagnetic sounding device |
| 11/02/1988 | EP0288836A1 Shock-wave generator for a device for the non-contacting disintegration of concretions in a body |
| 10/20/1988 | WO1988007894A1 Air-driven low-frequency sound generator with positive feedback system |
| 10/20/1988 | DE3725094C1 Electroacoustic signal transmitter |