FR943320A - Improvement in magnetic sound recording and reproduction devices - Google Patents

Improvement in magnetic sound recording and reproduction devices

Info

Publication number
FR943320A
FR943320A FR943320DA FR943320A FR 943320 A FR943320 A FR 943320A FR 943320D A FR943320D A FR 943320DA FR 943320 A FR943320 A FR 943320A
Authority
FR
France
Prior art keywords
improvement
sound recording
reproduction devices
magnetic sound
magnetic
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
Leon Ginsberg
Guy-Julien Manin
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 FR943320A publication Critical patent/FR943320A/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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
FR943320D 1946-05-10 1947-03-15 Improvement in magnetic sound recording and reproduction devices Expired FR943320A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB943320X 1946-05-10

Publications (1)

Publication Number Publication Date
FR943320A true FR943320A (en) 1949-03-04

Family

ID=10766874

Family Applications (1)

Application Number Title Priority Date Filing Date
FR943320D Expired FR943320A (en) 1946-05-10 1947-03-15 Improvement in magnetic sound recording and reproduction devices

Country Status (1)

Country Link
FR (1) FR943320A (en)

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