BE340130A - - Google Patents

Info

Publication number
BE340130A
BE340130A BE340130DA BE340130A BE 340130 A BE340130 A BE 340130A BE 340130D A BE340130D A BE 340130DA BE 340130 A BE340130 A BE 340130A
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 BE340130A publication Critical patent/BE340130A/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
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
BE340130D 1926-02-05 BE340130A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86123A US1702926A (en) 1926-02-05 1926-02-05 Loud-speaker

Publications (1)

Publication Number Publication Date
BE340130A true BE340130A (fr)

Family

ID=22196419

Family Applications (1)

Application Number Title Priority Date Filing Date
BE340130D BE340130A (fr) 1926-02-05

Country Status (2)

Country Link
US (1) US1702926A (fr)
BE (1) BE340130A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5379525A (en) * 1976-12-23 1978-07-14 Sony Corp Compound diaphtagm for speakers
FR2598843B1 (fr) * 1986-05-15 1989-02-10 Centre Nat Rech Scient Structure composite pour table d'harmonie d'instruments a cordes et son procede de fabrication

Also Published As

Publication number Publication date
US1702926A (en) 1929-02-19

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