FR712254A - Perfectionnements aux phonographes et machines similaires - Google Patents

Perfectionnements aux phonographes et machines similaires

Info

Publication number: FR712254A
Authority: FR; France
Prior art keywords: phonographs; similar machines; machines; similar
Prior art date: 1930-02-28
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

Inventor

Ernest-Norbert Kennedy

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.)

1930-02-28

Filing date

1931-02-27

Publication date

1931-09-29

1931-02-27 Application filed filed Critical

1931-09-29 Application granted granted Critical

1931-09-29 Publication of FR712254A publication Critical patent/FR712254A/fr

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card

FR712254D 1930-02-28 1931-02-27 Perfectionnements aux phonographes et machines similaires Expired FR712254A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB712254X		1930-02-28

Publications (1)

Publication Number	Publication Date
FR712254A true FR712254A (fr)	1931-09-29

Family

ID=10494407

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR712254D Expired FR712254A (fr)	1930-02-28	1931-02-27	Perfectionnements aux phonographes et machines similaires

Country Status (1)

Country	Link
FR (1)	FR712254A (fr)

1931
- 1931-02-27 FR FR712254D patent/FR712254A/fr not_active Expired

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