FR554177A - Improvements in manufacturing processes for recording discs for phonographs, and new products resulting therefrom - Google Patents

Improvements in manufacturing processes for recording discs for phonographs, and new products resulting therefrom

Info

Publication number
FR554177A
FR554177A FR554177DA FR554177A FR 554177 A FR554177 A FR 554177A FR 554177D A FR554177D A FR 554177DA FR 554177 A FR554177 A FR 554177A
Authority
FR
France
Prior art keywords
phonographs
manufacturing processes
new products
resulting therefrom
products resulting
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.)
METAL RECORDING DISC Co I
Original Assignee
METAL RECORDING DISC Co I
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 METAL RECORDING DISC Co I filed Critical METAL RECORDING DISC Co I
Application granted granted Critical
Publication of FR554177A publication Critical patent/FR554177A/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
FR554177D 1922-07-19 1922-07-19 Improvements in manufacturing processes for recording discs for phonographs, and new products resulting therefrom Expired FR554177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR554177T 1922-07-19

Publications (1)

Publication Number Publication Date
FR554177A true FR554177A (en) 1923-06-06

Family

ID=8938693

Family Applications (1)

Application Number Title Priority Date Filing Date
FR554177D Expired FR554177A (en) 1922-07-19 1922-07-19 Improvements in manufacturing processes for recording discs for phonographs, and new products resulting therefrom

Country Status (1)

Country Link
FR (1) FR554177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757878C (en) * 1939-12-22 1954-02-01 Telefunkenplatte G M B H Record with side writing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757878C (en) * 1939-12-22 1954-02-01 Telefunkenplatte G M B H Record with side writing

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