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Patente

Referenziert von

Zitiert von PatentEingetragenAusgestelltUrsprünglich Bevollmächtigter Titel
US394475927. Nov. 197316. März 1976U.S. Philips CorporationMicrophone provided with a cylindrically shaped microphone cartridge
US416088128. Dez. 197710. Juli 1979Microtel B.V.Electret transducers: acoustically transparent backplate of sintered conductive spheres and a thin electret coating; meshlike diaphragm spacing screen overlays apertured electret backplate with screen junctions overlaying the apertures
US433184022. Febr. 198025. Mai 1982Lectret S.A.Electret transducer with tapered acoustic chamber
US46151051. Aug. 19847. Okt. 1986Tokyo Shibaura Denki Kabushiki KaishaElectroacoustic transducer and a method for manufacturing thereof
US554439917. Febr. 199513. Aug. 1996Texas Instruments IncorporatedMethod for making a pressure transducer
USRE3365111. Okt. 198830. Juli 1991AT&T Bell LaboratoriesVariable gap device and method of manufacture

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