FR691827A - Magnetic recording device for telephone currents - Google Patents

Magnetic recording device for telephone currents

Info

Publication number
FR691827A
FR691827A FR691827DA FR691827A FR 691827 A FR691827 A FR 691827A FR 691827D A FR691827D A FR 691827DA FR 691827 A FR691827 A FR 691827A
Authority
FR
France
Prior art keywords
magnetic recording
recording device
telephone currents
currents
telephone
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
Felipe Saldana
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 FR691827A publication Critical patent/FR691827A/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
FR691827D 1930-03-12 1930-03-12 Magnetic recording device for telephone currents Expired FR691827A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR691827T 1930-03-12

Publications (1)

Publication Number Publication Date
FR691827A true FR691827A (en) 1930-10-27

Family

ID=9035081

Family Applications (1)

Application Number Title Priority Date Filing Date
FR691827D Expired FR691827A (en) 1930-03-12 1930-03-12 Magnetic recording device for telephone currents

Country Status (1)

Country Link
FR (1) FR691827A (en)

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