DK136749C - - Google Patents

Info

Publication number
DK136749C
DK136749C DK407369A DK407369A DK136749C DK 136749 C DK136749 C DK 136749C DK 407369 A DK407369 A DK 407369A DK 407369 A DK407369 A DK 407369A DK 136749 C DK136749 C DK 136749C
Authority
DK
Denmark
Application number
DK407369A
Other languages
Danish (da)
Other versions
DK136749B (da
Inventor
E V Carlson
M C Killion
Original Assignee
Industrial Research Products Inc.
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 Industrial Research Products Inc. filed Critical Industrial Research Products Inc.
Publication of DK136749B publication Critical patent/DK136749B/da
Application granted granted Critical
Publication of DK136749C publication Critical patent/DK136749C/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
DK407369AA 1968-07-29 1969-07-28 Elektroakustisk omsætter. DK136749B (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74827268A 1968-07-29 1968-07-29

Publications (2)

Publication Number Publication Date
DK136749B DK136749B (da) 1977-11-14
DK136749C true DK136749C (de) 1978-04-24

Family

ID=25008744

Family Applications (1)

Application Number Title Priority Date Filing Date
DK407369AA DK136749B (da) 1968-07-29 1969-07-28 Elektroakustisk omsætter.

Country Status (6)

Country Link
CH (1) CH501349A (de)
DE (1) DE1916719C3 (de)
DK (1) DK136749B (de)
FR (1) FR1597238A (de)
GB (1) GB1234218A (de)
NL (1) NL150656B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2531299B1 (fr) * 1982-08-02 1986-07-18 Depaepe Sa Henri Transducteur acousto-electrique, notamment pour microphone piezoelectrique
CN102282866B (zh) * 2009-01-14 2015-12-09 惠普开发有限公司 声压换能器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL298219A (de) * 1962-11-28

Also Published As

Publication number Publication date
GB1234218A (de) 1971-06-03
DE1916719A1 (de) 1970-03-05
NL6900622A (de) 1970-02-02
DE1916719B2 (de) 1970-09-10
CH501349A (de) 1970-12-31
FR1597238A (de) 1970-06-22
NL150656B (nl) 1976-08-16
DE1916719C3 (de) 1971-04-15
DK136749B (da) 1977-11-14

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Legal Events

Date Code Title Description
PBP Patent lapsed