FR7534E - Microphonograph device - Google Patents

Microphonograph device

Info

Publication number: FR7534E
Authority: FR; France
Prior art keywords: microphonograph; microphonograph device
Prior art date: 1906-03-12
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

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.)

1906-03-12

Filing date

1907-04-02

Publication date

1907-08-21

1907-04-02 Application filed by Individual filed Critical Individual

1907-08-21 Application granted granted Critical

1907-08-21 Publication of FR7534E publication Critical patent/FR7534E/en

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

FR7534D 1906-03-12 1907-04-02 Microphonograph device Expired FR7534E (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR364162T		1906-03-12
FR7534T		1907-04-02

Publications (1)

Publication Number	Publication Date
FR7534E true FR7534E (en)	1907-08-21

Family

ID=1350322

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR7534D Expired FR7534E (en)	1906-03-12	1907-04-02	Microphonograph device

Country Status (1)

Country	Link
FR (1)	FR7534E (en)

1907
- 1907-04-02 FR FR7534D patent/FR7534E/en not_active Expired

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