FR520576A - Perfectionnements aux phonographes - Google Patents

Perfectionnements aux phonographes

Info

Publication number
FR520576A
FR520576A FR520576A FR520576DA FR520576A FR 520576 A FR520576 A FR 520576A FR 520576 A FR520576 A FR 520576A FR 520576D A FR520576D A FR 520576DA FR 520576 A FR520576 A FR 520576A
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
FR520576A
Other languages
English (en)
Inventor
Harry Sommerville Banfield
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 FR520576A publication Critical patent/FR520576A/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
FR520576A 1916-11-24 1920-07-15 Perfectionnements aux phonographes Expired FR520576A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US520576XA 1916-11-24 1916-11-24

Publications (1)

Publication Number Publication Date
FR520576A true FR520576A (fr) 1921-06-28

Family

ID=21975158

Family Applications (1)

Application Number Title Priority Date Filing Date
FR520576A Expired FR520576A (fr) 1916-11-24 1920-07-15 Perfectionnements aux phonographes

Country Status (1)

Country Link
FR (1) FR520576A (fr)

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