FR67470E - Development of disc recording playback devices - Google Patents

Development of disc recording playback devices

Info

Publication number
FR67470E
FR67470E FR67470DA FR67470E FR 67470 E FR67470 E FR 67470E FR 67470D A FR67470D A FR 67470DA FR 67470 E FR67470 E FR 67470E
Authority
FR
France
Prior art keywords
development
playback devices
disc recording
recording playback
disc
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
Maurice Martenot
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 FR67470E publication Critical patent/FR67470E/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
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
FR67470D 1954-08-27 1954-08-27 Development of disc recording playback devices Expired FR67470E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR67470T 1954-08-27

Publications (1)

Publication Number Publication Date
FR67470E true FR67470E (en) 1958-03-13

Family

ID=8699660

Family Applications (1)

Application Number Title Priority Date Filing Date
FR67470D Expired FR67470E (en) 1954-08-27 1954-08-27 Development of disc recording playback devices

Country Status (1)

Country Link
FR (1) FR67470E (en)

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