FR573715A - Improvement in phonographs - Google Patents

Improvement in phonographs

Info

Publication number
FR573715A
FR573715A FR573715DA FR573715A FR 573715 A FR573715 A FR 573715A FR 573715D A FR573715D A FR 573715DA FR 573715 A FR573715 A FR 573715A
Authority
FR
France
Prior art keywords
phonographs
improvement
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)
Inventor
Frank Bowley Mitchell
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 filed Critical
Application granted granted Critical
Publication of FR573715A publication Critical patent/FR573715A/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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
FR573715D 1923-11-20 1923-11-20 Improvement in phonographs Expired FR573715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR573715T 1923-11-20

Publications (1)

Publication Number Publication Date
FR573715A true FR573715A (en) 1924-06-28

Family

ID=8952193

Family Applications (1)

Application Number Title Priority Date Filing Date
FR573715D Expired FR573715A (en) 1923-11-20 1923-11-20 Improvement in phonographs

Country Status (1)

Country Link
FR (1) FR573715A (en)

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