FR693507A - Improvements to the needles of speaking machines - Google Patents

Improvements to the needles of speaking machines

Info

Publication number
FR693507A
FR693507A FR693507DA FR693507A FR 693507 A FR693507 A FR 693507A FR 693507D A FR693507D A FR 693507DA FR 693507 A FR693507 A FR 693507A
Authority
FR
France
Prior art keywords
needles
speaking machines
speaking
machines
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
Luis Escandon
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 FR693507A publication Critical patent/FR693507A/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
    • G11B3/48—Needles
FR693507D 1929-07-04 1930-04-08 Improvements to the needles of speaking machines Expired FR693507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES693507X 1929-07-04

Publications (1)

Publication Number Publication Date
FR693507A true FR693507A (en) 1930-11-21

Family

ID=8246144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR693507D Expired FR693507A (en) 1929-07-04 1930-04-08 Improvements to the needles of speaking machines

Country Status (1)

Country Link
FR (1) FR693507A (en)

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