FR421491A - Improvements to sound reproducing machines - Google Patents

Improvements to sound reproducing machines

Info

Publication number
FR421491A
FR421491A FR421491DA FR421491A FR 421491 A FR421491 A FR 421491A FR 421491D A FR421491D A FR 421491DA FR 421491 A FR421491 A FR 421491A
Authority
FR
France
Prior art keywords
sound reproducing
reproducing machines
machines
sound
reproducing
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
Percival James Packman
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 FR421491A publication Critical patent/FR421491A/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
    • G11B3/72—Groove formations, e.g. run-in groove, run-out groove
FR421491D 1909-10-15 1910-10-15 Improvements to sound reproducing machines Expired FR421491A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB421491X 1909-10-15

Publications (1)

Publication Number Publication Date
FR421491A true FR421491A (en) 1911-02-23

Family

ID=1464536

Family Applications (1)

Application Number Title Priority Date Filing Date
FR421491D Expired FR421491A (en) 1909-10-15 1910-10-15 Improvements to sound reproducing machines

Country Status (1)

Country Link
FR (1) FR421491A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297885B (en) * 1968-03-27 1969-06-19 Rabe Erich Method and device for cutting records

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297885B (en) * 1968-03-27 1969-06-19 Rabe Erich Method and device for cutting records

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