BE407715A - - Google Patents

Info

Publication number
BE407715A
BE407715A BE407715DA BE407715A BE 407715 A BE407715 A BE 407715A BE 407715D A BE407715D A BE 407715DA BE 407715 A BE407715 A BE 407715A
Authority
BE
Belgium
Application number
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 of BE407715A publication Critical patent/BE407715A/xx

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
    • H04R9/041—Centering

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
BE407715D 1932-08-30 BE407715A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US631039A US1893049A (en) 1932-08-30 1932-08-30 Sound producing device

Publications (1)

Publication Number Publication Date
BE407715A true BE407715A (en:Method)

Family

ID=24529528

Family Applications (1)

Application Number Title Priority Date Filing Date
BE407715D BE407715A (en:Method) 1932-08-30

Country Status (2)

Country Link
US (1) US1893049A (en:Method)
BE (1) BE407715A (en:Method)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469773A (en) * 1934-06-04 1949-05-10 Jensen Mfg Company Loud-speaker diaphragm support member
US3247925A (en) * 1962-03-08 1966-04-26 Lord Corp Loudspeaker
US4926486A (en) * 1987-07-17 1990-05-15 Barsumian Bruce R Transducer assembly for automatic message system
KR19990044067A (ko) * 1995-09-02 1999-06-25 에이지마. 헨리 벤딩기계

Also Published As

Publication number Publication date
US1893049A (en) 1933-01-03

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