FR40099E - Improvements to films - Google Patents

Improvements to films

Info

Publication number: FR40099E
Authority: FR; France
Prior art keywords: films
Prior art date: 1931-04-10
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

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.)

Compagnie Francaise Thomson Houston SA

Original Assignee

Compagnie Francaise Thomson Houston SA

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.)

1931-04-10

Filing date

1931-04-10

Publication date

1932-04-20

1931-04-10 Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA

1932-04-20 Application granted granted Critical

1932-04-20 Publication of FR40099E publication Critical patent/FR40099E/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
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers

FR40099D 1931-04-10 1931-04-10 Improvements to films Expired FR40099E (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR40099T		1931-04-10

Publications (1)

Publication Number	Publication Date
FR40099E true FR40099E (en)	1932-04-20

Family

ID=8676422

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR40099D Expired FR40099E (en)	1931-04-10	1931-04-10	Improvements to films

Country Status (1)

Country	Link
FR (1)	FR40099E (en)

1931
- 1931-04-10 FR FR40099D patent/FR40099E/en not_active Expired

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