FR520219A - Perfectionnements aux phonographes - Google Patents

Perfectionnements aux phonographes

Info

Publication number
FR520219A
FR520219A FR520219A FR520219DA FR520219A FR 520219 A FR520219 A FR 520219A FR 520219 A FR520219 A FR 520219A FR 520219D A FR520219D A FR 520219DA FR 520219 A FR520219 A FR 520219A
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
FR520219A
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 FR520219A publication Critical patent/FR520219A/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
    • G11B3/02—Arrangements of heads
    • G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
    • G11B3/42—Arranging, supporting, or driving of heads or of transducers relatively to record carriers with provision for adaptation or interchange of heads
FR520219A 1916-11-24 1920-07-10 Perfectionnements aux phonographes Expired FR520219A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US520219XA 1916-11-24 1916-11-24

Publications (1)

Publication Number Publication Date
FR520219A true FR520219A (fr) 1921-06-22

Family

ID=21974901

Family Applications (1)

Application Number Title Priority Date Filing Date
FR520219A Expired FR520219A (fr) 1916-11-24 1920-07-10 Perfectionnements aux phonographes

Country Status (1)

Country Link
FR (1) FR520219A (fr)

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