FR34820E - - Google Patents

Info

Publication number
FR34820E
FR34820E FR34820DA FR34820E FR 34820 E FR34820 E FR 34820E FR 34820D A FR34820D A FR 34820DA FR 34820 E FR34820 E FR 34820E
Authority
FR
France
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)
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.)
Publication date
Priority claimed from US1483A external-priority patent/US1707617A/en
Priority claimed from GB3254426A external-priority patent/GB287631A/en
Priority claimed from GB1770927A external-priority patent/GB297894A/en
Application granted granted Critical
Publication of FR34820E publication Critical patent/FR34820E/fr
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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR34820D 1925-01-09 Expired FR34820E (zh)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US1483A US1707617A (en) 1925-01-09 1925-01-09 Sound-reproducing apparatus
GB3254326 1926-12-23
GB3254426A GB287631A (en) 1926-12-23 1926-12-23 Improvements relating to devices for the interconversion of mechanical and electrical oscillations
GB1770927A GB297894A (en) 1927-07-04 1927-07-04 Improvements relating to devices for the interconversion of mechanical and electrical vibrations
GB1915127 1927-07-19

Publications (1)

Publication Number Publication Date
FR34820E true FR34820E (zh) 1927-10-21

Family

ID=27516193

Family Applications (1)

Application Number Title Priority Date Filing Date
FR34820D Expired FR34820E (zh) 1925-01-09

Country Status (2)

Country Link
BE (1) BE347485A (zh)
FR (1) FR34820E (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081780A1 (de) * 1981-12-10 1983-06-22 International Standard Electric Corporation Elektrodynamischer Wandler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081780A1 (de) * 1981-12-10 1983-06-22 International Standard Electric Corporation Elektrodynamischer Wandler

Also Published As

Publication number Publication date
BE347485A (zh)

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