FR717049A - Improvement of phonograph records - Google Patents

Improvement of phonograph records

Info

Publication number
FR717049A
FR717049A FR717049DA FR717049A FR 717049 A FR717049 A FR 717049A FR 717049D A FR717049D A FR 717049DA FR 717049 A FR717049 A FR 717049A
Authority
FR
France
Prior art keywords
improvement
phonograph records
phonograph
records
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
Rene-Auguste-Edouard Renaud
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 FR717049A publication Critical patent/FR717049A/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
    • G11B3/68—Record carriers
    • G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
FR717049D 1931-05-15 1931-05-15 Improvement of phonograph records Expired FR717049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR717049T 1931-05-15

Publications (1)

Publication Number Publication Date
FR717049A true FR717049A (en) 1931-12-31

Family

ID=9089871

Family Applications (1)

Application Number Title Priority Date Filing Date
FR717049D Expired FR717049A (en) 1931-05-15 1931-05-15 Improvement of phonograph records

Country Status (1)

Country Link
FR (1) FR717049A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511708A (en) * 1948-12-23 1950-06-13 Jr John Hays Hammond Phonograph record

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511708A (en) * 1948-12-23 1950-06-13 Jr John Hays Hammond Phonograph record

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