TRANSDUCER APPARATUS COMPRISING TWO MEMBRANES

United States of America Patent

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Issued Date
Aug 13, 2015
app pub date
Aug 5, 2011
filing date
Aug 5, 2011

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Abandoned

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Abstract

An acoustic transducer comprising: at least two membranes; and at least one adjustable coupling configured to adjustably couple oscillations between a first membrane and a second membrane of the at least two membranes.

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Patent Owner(s)

Patent Owner	Address
NOKIA CORPORATION	KEILALAHDENTIE 4 ESPOO FIN-02150

International Classification(s)

H04R:LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR ....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Kaivola, Risto Antero	Tampere, FI	1	3
Suvanto, Mikko Veli Aimo	Pittsburg, US	16	272

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TRANSDUCER APPARATUS COMPRISING TWO MEMBRANES

Number of patents in Portfolio can not be more than 2000

United States of America Patent

14236864

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14236864

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