FR828269A - Optics for photographic sound recording - Google Patents

Optics for photographic sound recording

Info

Publication number: FR828269A
Authority: FR; France
Prior art keywords: optics; sound recording; photographic sound; photographic; recording
Prior art date: 1936-11-04
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.)

Klangfilm GmbH

Original Assignee

Klangfilm GmbH

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.)

1936-11-04

Filing date

1937-10-25

Publication date

1938-05-13

1937-10-25 Application filed by Klangfilm GmbH filed Critical Klangfilm GmbH

1938-05-13 Application granted granted Critical

1938-05-13 Publication of FR828269A publication Critical patent/FR828269A/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

FR828269D 1936-11-04 1937-10-25 Optics for photographic sound recording Expired FR828269A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE828269X		1936-11-04

Publications (1)

Publication Number	Publication Date
FR828269A true FR828269A (en)	1938-05-13

Family

ID=6748248

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR828269D Expired FR828269A (en)	1936-11-04	1937-10-25	Optics for photographic sound recording

Country Status (1)

Country	Link
FR (1)	FR828269A (en)

1937
- 1937-10-25 FR FR828269D patent/FR828269A/en not_active Expired

Similar Documents

Publication	Publication Date	Title
FR822142A (en)	1937-12-21	Improvement in sound recording
FR826824A (en)	1938-04-11	Photographic lens shutter
FR828269A (en)	1938-05-13	Optics for photographic sound recording
FR754624A (en)	1933-11-10	Photographic sound recording
FR827646A (en)	1938-04-29	Support for photographic emulsions
FR815329A (en)	1937-07-09	Camera for sound recording
FR803014A (en)	1936-09-21	Light box for photographic enlargement
FR820383A (en)	1937-11-09	Improvement in sound recording
FR827163A (en)	1938-04-20	Optics for sound film
FR834719A (en)	1938-11-30	Device for the production of photographic sound recordings
FR823023A (en)	1938-01-12	Photographic telephoto lens
FR723435A (en)	1932-04-08	Improvements to cameras for photographic sound recording
FR856044A (en)	1940-05-25	Box for photographic or cinematographic film
FR751819A (en)	1933-09-11	Improvements to optical sound recording devices
FR827404A (en)	1938-04-26	Optical device for sound film
FR822694A (en)	1938-01-05	Photographic lens
FR820290A (en)	1937-11-08	Photographic lens
FR819098A (en)	1937-10-09	Photographic lens
FR830464A (en)	1938-08-01	Photographic enlarger
FR857286A (en)	1940-09-03	screen for fixed or cinematographic light projections
FR904254A (en)	1945-10-31	Photographic telephoto lens
FR825558A (en)	1938-03-07	Diaphragm for sound recording
FR834769A (en)	1938-12-01	Sound film recording optics
FR748871A (en)	1933-07-12	Device for photographic recording of sound on film
FR790210A (en)	1935-11-16	Process for photographic sound recording