BE381615A - - Google Patents

Info

Publication number
BE381615A
BE381615A BE381615DA BE381615A BE 381615 A BE381615 A BE 381615A BE 381615D A BE381615D A BE 381615DA BE 381615 A BE381615 A BE 381615A
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 BE381615A publication Critical patent/BE381615A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00Variable-resistance transducers
    • H04R21/02Microphones
    • H04R21/021Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
BE381615D 1931-07-27 BE381615A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE740504X 1931-07-27

Publications (1)

Publication Number Publication Date
BE381615A true BE381615A (xx)

Family

ID=3879431

Family Applications (1)

Application Number Title Priority Date Filing Date
BE381615D BE381615A (xx) 1931-07-27

Country Status (2)

Country Link
BE (1) BE381615A (xx)
FR (1) FR740504A (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1003263B (de) * 1953-01-05 1957-02-28 Krone Kg Elektrodenanordnung fuer mit Kohlegriess gefuellte Sprechkapseln

Also Published As

Publication number Publication date
FR740504A (fr) 1933-01-27

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