BE447676A - - Google Patents

Info

Publication number
BE447676A
BE447676A BE447676DA BE447676A BE 447676 A BE447676 A BE 447676A BE 447676D A BE447676D A BE 447676DA BE 447676 A BE447676 A BE 447676A
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 BE447676A publication Critical patent/BE447676A/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
    • H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
BE447676D 1941-10-24 BE447676A (US06650917-20031118-M00005.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR879596T 1941-10-24

Publications (1)

Publication Number Publication Date
BE447676A true BE447676A (US06650917-20031118-M00005.png)

Family

ID=9361882

Family Applications (1)

Application Number Title Priority Date Filing Date
BE447676D BE447676A (US06650917-20031118-M00005.png) 1941-10-24

Country Status (2)

Country Link
BE (1) BE447676A (US06650917-20031118-M00005.png)
FR (1) FR879596A (US06650917-20031118-M00005.png)

Also Published As

Publication number Publication date
FR879596A (fr) 1943-02-26

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