FR578989A - Perfectionnements aux gramophones et autres machines analogues - Google Patents

Perfectionnements aux gramophones et autres machines analogues

Info

Publication number
FR578989A
FR578989A FR578989DA FR578989A FR 578989 A FR578989 A FR 578989A FR 578989D A FR578989D A FR 578989DA FR 578989 A FR578989 A FR 578989A
Authority
FR
France
Prior art keywords
gramophones
similar machines
machines
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
Other languages
English (en)
Inventor
Charles Ernest Polden
Sydney William Jame Macpherson
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 FR578989A publication Critical patent/FR578989A/fr
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
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
FR578989D 1923-03-14 1924-03-12 Perfectionnements aux gramophones et autres machines analogues Expired FR578989A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB578989X 1923-03-14

Publications (1)

Publication Number Publication Date
FR578989A true FR578989A (fr) 1924-10-07

Family

ID=10480315

Family Applications (1)

Application Number Title Priority Date Filing Date
FR578989D Expired FR578989A (fr) 1923-03-14 1924-03-12 Perfectionnements aux gramophones et autres machines analogues

Country Status (1)

Country Link
FR (1) FR578989A (fr)

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