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3,969,583 Method of stereophonic recording Griese; Hans-Joachim (Isernhagen, DT); Warning; Paul-Friedrich (Mellendorf, DT); Wichmann; Klaus-Hinrich (Mellendorf, DT)
4,633,498 Infrared headphones for the hearing impaired Warnke; Egon F. (Wedemark, DE); Willemsen; Klaus (Wedemark, DE)
4,922,471 Capacitive sound transducer Kuehnel; Wolfgang (Darmstadt, DE)
5,471,437 Electrodynamic acoustic transducer Schutter; Ernst (Hanover, DE); Gorelik; Vladimir (Hanover, DE)
5,596,603 Device for wireless transmission of digital data, in particular of audio data, by infrared light in headphones
Haupt; Axel (Langenhagen, DE); Delibruegge; Karl-Hermann (Hannover, DE)
5,784,471 Hearing aid with an electrodynamic acoustic transducer Bebenroth; Wolf-Dietrich (Gross Hehlen, DE)
5,801,592 Amplitude stabilized oscillator circuit Mann; Wolfgang (Isernhagen, DE); Schaefer; Horst (Barsinghausen, DE)
5,809,156 Sound reproduction device with active noise compensation Bartels; Volker (Hannover, DE); Markmann; Burkhard (Seelze, DE)
5,900,788 Low-noise oscillator circuit having negative feedback Hagemeyer; Frank (Wedemark, DE)
5,920,631 Multiplex transmission device for multiple-channel signals, especially multiple-channel audio signals Andres; Joerg (Hannover, DE)
5,949,897 Sound reproduction device with active noise compensation Bartels; Volker (Hannover, DE); Markmann; Burkhard (Seelze, DE)
6,062,337 Audio system that can be mounted on the body of a user Zinserling; Bert (Bad Nauheim, DE)
6,093,056 Battery receptacle Donauer; Herbert (Wedemark, DE); Erdmann; Wilhelm (Wedemark, DE)
6,122,383 Device for reducing noise Berge; Wolfgang zum (Walsrode, DE)
6,149,114 Mounting device for attaching a microphone to a musical instrument Epping; Heinz (Neustadt, DE); Sohnholz; Gerd (Essel, DE)
6,158,902 Boundary layer microphone Staat; Raimund (Burgwedel, DE)
6,208,743 Electrodynamic acoustic transducer with magnetic gap sealing Marten; Stefan (Wedemark, DE); Wiggers; Rainer (Ahlden Ot Eilte, DE)
6,210,241 Electrical contacting of fine wire Michaelis; Andre (Wedemark, DE)
6,305,654 Clamping holder Schmidt; Axel (Wedemark, DE); Soehnholz; Gerd (Essel, DE)
6,351,541 Electrostatic transducer Zinserling; Bert (Bad Nauheim, DE)
6,418,229 Directional microphone, in particular having symmetrical directivity Staat; Raimund (Burgwedel, DE)
6,454,226 Holding device for the attachment of a microphone to an object Epping; Heinz (Neustadt, DE); Grone; Christian (Garbsen, DE); Sohnholz; Gerd (Essel, DE)
D464,038 Earphone Bebenroth; Wolf-Dietrich (Gross Hehlen, DE)
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