FR7497E - Microphonograph device - Google Patents

Microphonograph device

Info

Publication number
FR7497E
FR7497E FR7497DA FR7497E FR 7497 E FR7497 E FR 7497E FR 7497D A FR7497D A FR 7497DA FR 7497 E FR7497 E FR 7497E
Authority
FR
France
Prior art keywords
microphonograph
microphonograph device
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
Eugene Ducretet
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 FR7497E publication Critical patent/FR7497E/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
FR7497D 1906-03-12 1907-03-18 Microphonograph device Expired FR7497E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR364162T 1906-03-12
FR7497T 1907-03-18

Publications (1)

Publication Number Publication Date
FR7497E true FR7497E (en) 1907-08-09

Family

ID=1350292

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7497D Expired FR7497E (en) 1906-03-12 1907-03-18 Microphonograph device

Country Status (1)

Country Link
FR (1) FR7497E (en)

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