FR571845A - Improvements in the manufacture of recording discs for gramophones - Google Patents

Improvements in the manufacture of recording discs for gramophones

Info

Publication number
FR571845A
FR571845A FR571845DA FR571845A FR 571845 A FR571845 A FR 571845A FR 571845D A FR571845D A FR 571845DA FR 571845 A FR571845 A FR 571845A
Authority
FR
France
Prior art keywords
gramophones
manufacture
recording discs
discs
recording
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.)
COLUMBIA GRAPHOPHONE Co
Original Assignee
COLUMBIA GRAPHOPHONE Co
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 COLUMBIA GRAPHOPHONE Co filed Critical COLUMBIA GRAPHOPHONE Co
Application granted granted Critical
Publication of FR571845A publication Critical patent/FR571845A/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
FR571845D 1922-10-18 1923-10-11 Improvements in the manufacture of recording discs for gramophones Expired FR571845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB571845X 1922-10-18

Publications (1)

Publication Number Publication Date
FR571845A true FR571845A (en) 1924-05-23

Family

ID=10478570

Family Applications (1)

Application Number Title Priority Date Filing Date
FR571845D Expired FR571845A (en) 1922-10-18 1923-10-11 Improvements in the manufacture of recording discs for gramophones

Country Status (1)

Country Link
FR (1) FR571845A (en)

Similar Documents

Publication Publication Date Title
FR872192A (en) Machines for the reproduction of recording elements and for the verification of such reproduction
FR696665A (en) Improvements in electro-magnetic devices intended for the recording or reproduction of phonograms
FR571845A (en) Improvements in the manufacture of recording discs for gramophones
FR720719A (en) Improvements in the manufacture of records for phonographs
FR789741A (en) Improvements in machines and processes for the manufacture and recording of phonographic records
FR564475A (en) Improvements in the manufacture of phonograph records
FR598983A (en) Talking machine for recording and reproduction
FR40447E (en) Improvements in the manufacture of phonograph records
FR737251A (en) Improvements in the manufacture of phonograph records
FR34031E (en) Improvements in the manufacture of phonograph records
FR33832E (en) Improvements in the manufacture of phonograph records
FR822508A (en) Incisable or impressionable disc for recording sound
FR716082A (en) Guidance for recording phonograph records
FR602219A (en) Improvements in the manufacture of sound recording devices
FR541080A (en) Improved device for storing the discs of talking machines and applicable for other uses
FR525789A (en) Apparatus for recording phonographic discs
FR692465A (en) Improvements in the manufacture of phonograph records
FR549881A (en) Record phonograph
FR557015A (en) Record phonograph
FR624981A (en) Improvements in the manufacture of gramophone records
FR534666A (en) Phonographic disc recording apparatus
FR25106E (en) Improvements in the manufacture of metallurgical coke
FR719966A (en) Improvements to record drives for phonographs
FR551726A (en) Improvements in photographic recording of electrical signals
FR836047A (en) Process for manufacturing phonographic recording discs and resulting discs