FR543479A - Improvements to sound recorders accompanied by views - Google Patents

Improvements to sound recorders accompanied by views

Info

Publication number: FR543479A
Authority: FR; France
Prior art keywords: accompanied; views; sound recorders; recorders; sound
Prior art date: 1921-11-11
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

Robert Brown Wheelan

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.)

1921-11-11

Filing date

1921-11-11

Publication date

1922-09-04

1921-11-11 Application filed filed Critical

1922-09-04 Application granted granted Critical

1922-09-04 Publication of FR543479A publication Critical patent/FR543479A/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
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/06—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon combined with other apparatus having a different main function

FR543479D 1921-11-11 1921-11-11 Improvements to sound recorders accompanied by views Expired FR543479A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR543479T		1921-11-11

Publications (1)

Publication Number	Publication Date
FR543479A true FR543479A (en)	1922-09-04

Family

ID=8931637

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR543479D Expired FR543479A (en)	1921-11-11	1921-11-11	Improvements to sound recorders accompanied by views

Country Status (1)

Country	Link
FR (1)	FR543479A (en)

1921
- 1921-11-11 FR FR543479D patent/FR543479A/en not_active Expired

Similar Documents

Publication	Publication Date	Title
FR560421A (en)	1923-10-04	Improvements to amplifiers
FR27035E (en)	1924-03-26	Improvements to telephone transmitters
FR516135A (en)	1921-04-14	Improvements to sound detectors
FR543479A (en)	1922-09-04	Improvements to sound recorders accompanied by views
FR560571A (en)	1923-10-06	Improvements to gasifiers
FR540973A (en)	1922-07-21	Addition to saxophones
FR542108A (en)	1922-08-05	Improvements relating to recording devices
FR559341A (en)	1923-09-13	Improvements to seleno-radio-dosimeter
FR27158E (en)	1924-05-19	Improvements to radio-receivers
FR534861A (en)	1922-04-04	Improvements to sound recording devices
FR521486A (en)	1921-07-15	Improvements to recording devices
FR509641A (en)	1920-11-16	Improvements to recording devices
FR544992A (en)	1922-10-03	Improvements to gasifiers
FR553505A (en)	1923-05-25	Improvements to gasifiers
FR542745A (en)	1922-08-21	Improvements to gasifiers
FR538543A (en)	1922-06-10	Improvements to gasifiers
FR27580E (en)	1924-07-31	Improvements to gasifiers
FR556799A (en)	1923-07-26	Improvements to phonographs
FR534546A (en)	1922-03-28	Improvements to phonographs
FR25731E (en)	1923-05-17	Improvements to phonographs
FR544368A (en)	1922-09-21	Improvements to brushcutting devices
FR552135A (en)	1923-04-24	Improvements to recording devices
FR544087A (en)	1922-09-14	Improvements to recording devices
FR542096A (en)	1922-08-05	Improvements to point formation mechanisms
FR539708A (en)	1922-06-30	Improvements to chronographs