FR850326A - Method of electro-mechanical recording of sound vibrations - Google Patents

Method of electro-mechanical recording of sound vibrations

Info

Publication number
FR850326A
FR850326A FR850326DA FR850326A FR 850326 A FR850326 A FR 850326A FR 850326D A FR850326D A FR 850326DA FR 850326 A FR850326 A FR 850326A
Authority
FR
France
Prior art keywords
electro
sound vibrations
mechanical recording
recording
mechanical
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR850326A publication Critical patent/FR850326A/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
FR850326D 1938-02-17 1939-02-15 Method of electro-mechanical recording of sound vibrations Expired FR850326A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE850326X 1938-02-17

Publications (1)

Publication Number Publication Date
FR850326A true FR850326A (en) 1939-12-14

Family

ID=6777127

Family Applications (1)

Application Number Title Priority Date Filing Date
FR850326D Expired FR850326A (en) 1938-02-17 1939-02-15 Method of electro-mechanical recording of sound vibrations

Country Status (1)

Country Link
FR (1) FR850326A (en)

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