BE338172A - - Google Patents

Info

Publication number
BE338172A
BE338172A BE338172DA BE338172A BE 338172 A BE338172 A BE 338172A BE 338172D A BE338172D A BE 338172DA BE 338172 A BE338172 A BE 338172A
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 BE338172A publication Critical patent/BE338172A/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
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/08—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers separated by air or other fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
BE338172D 1925-11-16 BE338172A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR618595T 1925-11-16

Publications (1)

Publication Number Publication Date
BE338172A true BE338172A (fr)

Family

ID=8983089

Family Applications (1)

Application Number Title Priority Date Filing Date
BE338172D BE338172A (fr) 1925-11-16

Country Status (2)

Country Link
BE (1) BE338172A (fr)
FR (1) FR618595A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330296A (en) * 1976-09-01 1978-03-22 Seiko Instr & Electronics Ltd Electro-acoustic transducer
JPS60134700A (ja) * 1983-12-23 1985-07-17 Nippon Denso Co Ltd 発音装置

Also Published As

Publication number Publication date
FR618595A (fr) 1927-03-11

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