FR507970A - Perfectionnements aux phonographes - Google Patents

Perfectionnements aux phonographes

Info

Publication number
FR507970A
FR507970A FR507970A FR507970DA FR507970A FR 507970 A FR507970 A FR 507970A FR 507970 A FR507970 A FR 507970A FR 507970D A FR507970D A FR 507970DA FR 507970 A FR507970 A FR 507970A
Authority
FR
France
Prior art keywords
phonographs
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
FR507970A
Other languages
English (en)
Inventor
Joseph Butler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR507970A publication Critical patent/FR507970A/fr
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
FR507970A 1918-10-17 1919-12-30 Perfectionnements aux phonographes Expired FR507970A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB507970X 1918-10-17

Publications (1)

Publication Number Publication Date
FR507970A true FR507970A (fr) 1920-09-28

Family

ID=10457396

Family Applications (1)

Application Number Title Priority Date Filing Date
FR507970A Expired FR507970A (fr) 1918-10-17 1919-12-30 Perfectionnements aux phonographes

Country Status (1)

Country Link
FR (1) FR507970A (fr)

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