FR621452A - Acoustic instrument - Google Patents

Acoustic instrument

Info

Publication number
FR621452A
FR621452A FR621452DA FR621452A FR 621452 A FR621452 A FR 621452A FR 621452D A FR621452D A FR 621452DA FR 621452 A FR621452 A FR 621452A
Authority
FR
France
Prior art keywords
acoustic instrument
acoustic
instrument
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR621452A publication Critical patent/FR621452A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR621452D 1925-08-11 1926-08-10 Acoustic instrument Expired FR621452A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE256963X 1925-08-11

Publications (1)

Publication Number Publication Date
FR621452A true FR621452A (en) 1927-05-12

Family

ID=5966421

Family Applications (1)

Application Number Title Priority Date Filing Date
FR621452D Expired FR621452A (en) 1925-08-11 1926-08-10 Acoustic instrument

Country Status (2)

Country Link
FR (1) FR621452A (en)
GB (1) GB256963A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077228A2 (en) * 1981-09-17 1983-04-20 Tadashi Sawafuji Electroacoustic transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077228A2 (en) * 1981-09-17 1983-04-20 Tadashi Sawafuji Electroacoustic transducer
EP0077228A3 (en) * 1981-09-17 1983-06-01 Tadashi Sawafuji Electroacoustic transducer

Also Published As

Publication number Publication date
GB256963A (en) 1927-02-24

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