FR660570A - Acoustic device - Google Patents

Acoustic device

Info

Publication number
FR660570A
FR660570A FR660570DA FR660570A FR 660570 A FR660570 A FR 660570A FR 660570D A FR660570D A FR 660570DA FR 660570 A FR660570 A FR 660570A
Authority
FR
France
Prior art keywords
acoustic device
acoustic
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEWCOMBE HAWLEY
Original Assignee
NEWCOMBE HAWLEY
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 NEWCOMBE HAWLEY filed Critical NEWCOMBE HAWLEY
Application granted granted Critical
Publication of FR660570A publication Critical patent/FR660570A/en
Expired legal-status Critical Current

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
    • H04R19/00—Electrostatic transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR660570D 1928-03-12 1928-09-18 Acoustic device Expired FR660570A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US380833A US1777170A (en) 1928-03-12 1928-03-12 Acoustic device

Publications (1)

Publication Number Publication Date
FR660570A true FR660570A (en) 1929-07-12

Family

ID=23502618

Family Applications (1)

Application Number Title Priority Date Filing Date
FR660570D Expired FR660570A (en) 1928-03-12 1928-09-18 Acoustic device

Country Status (3)

Country Link
US (1) US1777170A (en)
FR (1) FR660570A (en)
GB (1) GB307734A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796467A (en) * 1951-12-12 1957-06-18 Bell Telephone Labor Inc Directional transducer
US2686847A (en) * 1951-12-12 1954-08-17 Bell Telephone Labor Inc Directional transducer
US2993097A (en) * 1956-11-07 1961-07-18 Philco Corp Transducers
US2934612A (en) * 1957-10-24 1960-04-26 Walter O Stanton Electrostatic speaker
US3014098A (en) * 1959-05-08 1961-12-19 Charles I Malme Transducer
US3041418A (en) * 1960-01-14 1962-06-26 Rca Corp Transducers
NL281794A (en) * 1961-08-07
US5682075A (en) * 1993-07-14 1997-10-28 The University Of British Columbia Porous gas reservoir electrostatic transducer
KR101096548B1 (en) * 2009-11-06 2011-12-20 주식회사 비에스이 Mems microphone and manufacturing method of the same

Also Published As

Publication number Publication date
GB307734A (en) 1929-11-07
US1777170A (en) 1930-09-30

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