FR487050A - Perfectionnement aux aiguilles de phonographe - Google Patents

Perfectionnement aux aiguilles de phonographe

Info

Publication number: FR487050A
Authority: FR; France
Prior art keywords: phonograph; hands; improvement; phonograph hands
Prior art date: 1914-03-16
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.)

1914-03-16

Filing date

1915-03-13

Publication date

1918-05-29

1915-03-13 Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA

1918-05-29 Application granted granted Critical

1918-05-29 Publication of FR487050A publication Critical patent/FR487050A/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
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/44—Styli, e.g. sapphire, diamond
- G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank

FR487050D 1914-03-16 1915-03-13 Perfectionnement aux aiguilles de phonographe Expired FR487050A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US487050XA	1914-03-16	1914-03-16

Publications (1)

Publication Number	Publication Date
FR487050A true FR487050A (fr)	1918-05-29

Family

ID=1523600

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR487050D Expired FR487050A (fr)	1914-03-16	1915-03-13	Perfectionnement aux aiguilles de phonographe

Country Status (1)

Country	Link
FR (1)	FR487050A (fr)

1915
- 1915-03-13 FR FR487050D patent/FR487050A/fr not_active Expired

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