BE347740A - - Google Patents

Info

Publication number
BE347740A
BE347740A BE347740DA BE347740A BE 347740 A BE347740 A BE 347740A BE 347740D A BE347740D A BE 347740DA BE 347740 A BE347740 A BE 347740A
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 BE347740A publication Critical patent/BE347740A/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
    • 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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
BE347740D 1927-01-07 BE347740A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US159554A US1763054A (en) 1927-01-07 1927-01-07 Loud-speaker

Publications (1)

Publication Number Publication Date
BE347740A true BE347740A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=22573035

Family Applications (1)

Application Number Title Priority Date Filing Date
BE347740D BE347740A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1927-01-07

Country Status (4)

Country Link
US (1) US1763054A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE347740A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR646684A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB283211A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114429A (en) * 1961-01-16 1963-12-17 Hoffman Electronics Corp Loudspeaker

Also Published As

Publication number Publication date
FR646684A (fr) 1928-11-14
US1763054A (en) 1930-06-10
GB283211A (en) 1928-06-28

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