BE443899A - - Google Patents

Info

Publication number
BE443899A
BE443899A BE443899DA BE443899A BE 443899 A BE443899 A BE 443899A BE 443899D A BE443899D A BE 443899DA BE 443899 A BE443899 A BE 443899A
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 BE443899A publication Critical patent/BE443899A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/06—Telephone receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H04R5/0335—Earpiece support, e.g. headbands or neckrests

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
BE443899D 1940-12-23 BE443899A (ja�@�@)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH883805X 1940-12-23

Publications (1)

Publication Number Publication Date
BE443899A true BE443899A (ja�@�@)

Family

ID=4545091

Family Applications (1)

Application Number Title Priority Date Filing Date
BE443899D BE443899A (ja�@�@) 1940-12-23

Country Status (4)

Country Link
BE (1) BE443899A (ja�@�@)
CH (1) CH219812A (ja�@�@)
FR (1) FR883805A (ja�@�@)
NL (1) NL59387C (ja�@�@)

Also Published As

Publication number Publication date
CH219812A (de) 1942-02-28
NL59387C (ja�@�@)
FR883805A (fr) 1943-07-20

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