FI913741A - Elastiskt elektretmembran - Google Patents

Elastiskt elektretmembran Download PDF

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Publication number
FI913741A
FI913741A FI913741A FI913741A FI913741A FI 913741 A FI913741 A FI 913741A FI 913741 A FI913741 A FI 913741A FI 913741 A FI913741 A FI 913741A FI 913741 A FI913741 A FI 913741A
Authority
FI
Finland
Prior art keywords
elastic electric
electric membrane
membrane
elastic
electric
Prior art date
Application number
FI913741A
Other languages
English (en)
Other versions
FI913741A0 (fi
Inventor
Kari Johannes Kirjavainen
Original Assignee
Kari Johannes Kirjavainen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kari Johannes Kirjavainen filed Critical Kari Johannes Kirjavainen
Priority to FI913741A priority Critical patent/FI913741A/fi
Publication of FI913741A0 publication Critical patent/FI913741A0/fi
Publication of FI913741A publication Critical patent/FI913741A/fi

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FI913741A 1991-08-06 1991-08-06 Elastiskt elektretmembran FI913741A (fi)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI913741A FI913741A (fi) 1991-08-06 1991-08-06 Elastiskt elektretmembran

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI913741A FI913741A (fi) 1991-08-06 1991-08-06 Elastiskt elektretmembran

Publications (2)

Publication Number Publication Date
FI913741A0 FI913741A0 (fi) 1991-08-06
FI913741A true FI913741A (fi) 1993-02-07

Family

ID=8532963

Family Applications (1)

Application Number Title Priority Date Filing Date
FI913741A FI913741A (fi) 1991-08-06 1991-08-06 Elastiskt elektretmembran

Country Status (1)

Country Link
FI (1) FI913741A (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917437A (en) * 1994-12-28 1999-06-29 Screentec Ky Keyboard
WO2001039544A1 (en) * 1999-11-25 2001-05-31 Natural Colour Kari Kirjavainen Oy Electromechanic film and acoustic element
US7216417B2 (en) 2000-04-06 2007-05-15 Emfitech Oy Method for manufacturing an electromechanical sensor element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917437A (en) * 1994-12-28 1999-06-29 Screentec Ky Keyboard
WO2001039544A1 (en) * 1999-11-25 2001-05-31 Natural Colour Kari Kirjavainen Oy Electromechanic film and acoustic element
US6759769B2 (en) 1999-11-25 2004-07-06 Kari Kirjavainen Electromechanic film and acoustic element
US7216417B2 (en) 2000-04-06 2007-05-15 Emfitech Oy Method for manufacturing an electromechanical sensor element

Also Published As

Publication number Publication date
FI913741A0 (fi) 1991-08-06

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Legal Events

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FD Application lapsed