BE345858A - - Google Patents

Info

Publication number
BE345858A
BE345858A BE345858DA BE345858A BE 345858 A BE345858 A BE 345858A BE 345858D A BE345858D A BE 345858DA BE 345858 A BE345858 A BE 345858A
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 BE345858A publication Critical patent/BE345858A/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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
BE345858D 1926-10-22 BE345858A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE642446X 1926-10-22

Publications (1)

Publication Number Publication Date
BE345858A true BE345858A (enrdf_load_stackoverflow)

Family

ID=6580253

Family Applications (1)

Application Number Title Priority Date Filing Date
BE345858D BE345858A (enrdf_load_stackoverflow) 1926-10-22

Country Status (2)

Country Link
BE (1) BE345858A (enrdf_load_stackoverflow)
FR (1) FR642446A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR642446A (fr) 1928-08-28

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