FR512473A - Improvements in phonographs or similar apparatus - Google Patents

Improvements in phonographs or similar apparatus

Info

Publication number
FR512473A
FR512473A FR512473A FR512473DA FR512473A FR 512473 A FR512473 A FR 512473A FR 512473 A FR512473 A FR 512473A FR 512473D A FR512473D A FR 512473DA FR 512473 A FR512473 A FR 512473A
Authority
FR
France
Prior art keywords
phonographs
similar apparatus
similar
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
FR512473A
Other languages
French (fr)
Inventor
Samuel Albert Pickering
James Dawson Callery
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 FR512473A publication Critical patent/FR512473A/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
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
FR512473A 1917-09-01 1920-03-27 Improvements in phonographs or similar apparatus Expired FR512473A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US512473XA 1917-09-01 1917-09-01

Publications (1)

Publication Number Publication Date
FR512473A true FR512473A (en) 1921-01-24

Family

ID=21970167

Family Applications (1)

Application Number Title Priority Date Filing Date
FR512473A Expired FR512473A (en) 1917-09-01 1920-03-27 Improvements in phonographs or similar apparatus

Country Status (1)

Country Link
FR (1) FR512473A (en)

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