FR55225E - Method and devices for the engraving of sound tracks on a magnetic medium and for the reproduction of sounds by exploration of said tracks - Google Patents

Method and devices for the engraving of sound tracks on a magnetic medium and for the reproduction of sounds by exploration of said tracks

Info

Publication number
FR55225E
FR55225E FR55225DA FR55225E FR 55225 E FR55225 E FR 55225E FR 55225D A FR55225D A FR 55225DA FR 55225 E FR55225 E FR 55225E
Authority
FR
France
Prior art keywords
tracks
engraving
exploration
sounds
reproduction
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Jean-Marie-Achille Legrand
Gaston Chancenotte
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.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR55225E publication Critical patent/FR55225E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
FR55225D 1947-02-12 1947-02-12 Method and devices for the engraving of sound tracks on a magnetic medium and for the reproduction of sounds by exploration of said tracks Expired FR55225E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR55225T 1947-02-12

Publications (1)

Publication Number Publication Date
FR55225E true FR55225E (en) 1951-10-02

Family

ID=8689604

Family Applications (1)

Application Number Title Priority Date Filing Date
FR55225D Expired FR55225E (en) 1947-02-12 1947-02-12 Method and devices for the engraving of sound tracks on a magnetic medium and for the reproduction of sounds by exploration of said tracks

Country Status (1)

Country Link
FR (1) FR55225E (en)

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