FR581475A - Improvements relating to recording discs for speaking machines and similar machines - Google Patents

Improvements relating to recording discs for speaking machines and similar machines

Info

Publication number
FR581475A
FR581475A FR581475DA FR581475A FR 581475 A FR581475 A FR 581475A FR 581475D A FR581475D A FR 581475DA FR 581475 A FR581475 A FR 581475A
Authority
FR
France
Prior art keywords
machines
speaking
improvements relating
recording discs
similar
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 GRAMOPHONE Co LT
Original Assignee
COLUMBIA GRAMOPHONE Co LT
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 GRAMOPHONE Co LT filed Critical COLUMBIA GRAMOPHONE Co LT
Application granted granted Critical
Publication of FR581475A publication Critical patent/FR581475A/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
FR581475D 1923-10-19 1924-05-09 Improvements relating to recording discs for speaking machines and similar machines Expired FR581475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB581475X 1958-08-07

Publications (1)

Publication Number Publication Date
FR581475A true FR581475A (en) 1924-11-29

Family

ID=10480871

Family Applications (1)

Application Number Title Priority Date Filing Date
FR581475D Expired FR581475A (en) 1923-10-19 1924-05-09 Improvements relating to recording discs for speaking machines and similar machines

Country Status (2)

Country Link
BE (1) BE581475A (en)
FR (1) FR581475A (en)

Also Published As

Publication number Publication date
BE581475A (en) 1960-02-08

Similar Documents

Publication Publication Date Title
FR581475A (en) Improvements relating to recording discs for speaking machines and similar machines
FR563069A (en) Improvements to recording discs for talking machines
FR567595A (en) Improvements to gramophones and similar machines
FR578989A (en) Improvements to gramophones and other similar machines
FR573715A (en) Improvement in phonographs
FR576486A (en) Improvement in phonographs
FR579193A (en) Improvement in phonographs
FR562173A (en) Improvements to phonographs
FR567342A (en) Improvements to phonographs
FR573832A (en) Improvements to phonographs
FR575113A (en) Improvements to phonographs
FR597529A (en) Improvements to records for phonographs and speaking machines
FR570631A (en) Improvements to vibrometers
FR572711A (en) Improvements to talking machines and other similar machines
FR564047A (en) Improvements to bioyclettes
FR568598A (en) Improvements to parqueters
FR572322A (en) Improvements to
FR589810A (en) Improvements to thermo-siphons
FR584886A (en) Acoustic conduit for phonographs and similar machines
FR575696A (en) Improvements to warping machines
FR570775A (en) Improvements made to graphophones
FR809617A (en) Pads improvements
FR577138A (en) Tachometer improvements
FR27622E (en) Improvement in mouthpieces for saxophones
FR565874A (en) Improvement in machine guns of the wickers type