FR674073A - Phonograms - Google Patents

Phonograms

Info

Publication number
FR674073A
FR674073A FR674073DA FR674073A FR 674073 A FR674073 A FR 674073A FR 674073D A FR674073D A FR 674073DA FR 674073 A FR674073 A FR 674073A
Authority
FR
France
Prior art keywords
phonograms
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
William Francis Cooper
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 FR674073A publication Critical patent/FR674073A/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
    • G11B3/68—Record carriers
    • G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
FR674073D 1928-04-27 1929-04-26 Phonograms Expired FR674073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB674073X 1928-04-27

Publications (1)

Publication Number Publication Date
FR674073A true FR674073A (en) 1930-01-23

Family

ID=10491928

Family Applications (1)

Application Number Title Priority Date Filing Date
FR674073D Expired FR674073A (en) 1928-04-27 1929-04-26 Phonograms

Country Status (1)

Country Link
FR (1) FR674073A (en)

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