NL7214357A - - Google Patents

Info

Publication number
NL7214357A
NL7214357A NL7214357A NL7214357A NL7214357A NL 7214357 A NL7214357 A NL 7214357A NL 7214357 A NL7214357 A NL 7214357A NL 7214357 A NL7214357 A NL 7214357A NL 7214357 A NL7214357 A NL 7214357A
Authority
NL
Netherlands
Application number
NL7214357A
Other versions
NL166835C (nl
NL166835B (nl
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 filed Critical
Publication of NL7214357A publication Critical patent/NL7214357A/xx
Publication of NL166835B publication Critical patent/NL166835B/xx
Application granted granted Critical
Publication of NL166835C publication Critical patent/NL166835C/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00Electrostatic transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00Electrostatic transducers
    • H04R19/01Electrostatic transducers characterised by the use of electrets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2207/00Details of diaphragms or cones for electromechanical transducers or their suspension covered by H04R7/00 but not provided for in H04R7/00 or in H04R2307/00
    • H04R2207/021Diaphragm extensions, not necessarily integrally formed, e.g. skirts, rims, flanges

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
NL7214357A 1971-11-08 1972-10-24 Elektroakoestische omzetter met elektreet, en werkwijze voor de vervaardiging daarvan. NL166835C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19667771A 1971-11-08 1971-11-08
US19659271A 1971-11-08 1971-11-08

Publications (3)

Publication Number Publication Date
NL7214357A true NL7214357A (xx) 1973-05-10
NL166835B NL166835B (nl) 1981-04-15
NL166835C NL166835C (nl) 1981-09-15

Family

ID=26892043

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7214357A NL166835C (nl) 1971-11-08 1972-10-24 Elektroakoestische omzetter met elektreet, en werkwijze voor de vervaardiging daarvan.

Country Status (7)

Country Link
JP (1) JPS5148067B2 (xx)
CH (1) CH556628A (xx)
DK (1) DK140578B (xx)
FR (1) FR2159372B1 (xx)
GB (1) GB1398171A (xx)
NL (1) NL166835C (xx)
SE (1) SE378500B (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57188105A (en) * 1981-05-14 1982-11-19 Toshiba Corp Electret constituent

Also Published As

Publication number Publication date
DE2254692A1 (de) 1973-05-10
GB1398171A (en) 1975-06-18
NL166835C (nl) 1981-09-15
CH556628A (de) 1974-11-29
DE2254692B2 (de) 1976-08-05
FR2159372A1 (xx) 1973-06-22
NL166835B (nl) 1981-04-15
JPS5148067B2 (xx) 1976-12-18
DK140578C (xx) 1980-02-18
JPS4859824A (xx) 1973-08-22
SE378500B (xx) 1975-09-01
FR2159372B1 (xx) 1977-08-26
DK140578B (da) 1979-10-01

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Legal Events

Date Code Title Description
SNR Assignments of patents or rights arising from examined patent applications

Owner name: KNOWLES ELECTRONICS, INC.

V4 Lapsed because of reaching the maxim lifetime of a patent