FR731418A - Improvements in photographic processes and devices, in particular those for the recording, copying and reproduction of phonograms - Google Patents

Improvements in photographic processes and devices, in particular those for the recording, copying and reproduction of phonograms

Info

Publication number
FR731418A
FR731418A FR731418DA FR731418A FR 731418 A FR731418 A FR 731418A FR 731418D A FR731418D A FR 731418DA FR 731418 A FR731418 A FR 731418A
Authority
FR
France
Prior art keywords
phonograms
copying
reproduction
recording
devices
Prior art date
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
French (fr)
Inventor
Georges Mabboux
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.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR731418A publication Critical patent/FR731418A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/12—Cinematrographic processes of taking pictures or printing
    • G03C5/14—Cinematrographic processes of taking pictures or printing combined with sound-recording

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR731418D 1931-02-16 1932-02-15 Improvements in photographic processes and devices, in particular those for the recording, copying and reproduction of phonograms Expired FR731418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE731418X 1931-02-16

Publications (1)

Publication Number Publication Date
FR731418A true FR731418A (en) 1932-09-02

Family

ID=3879181

Family Applications (1)

Application Number Title Priority Date Filing Date
FR731418D Expired FR731418A (en) 1931-02-16 1932-02-15 Improvements in photographic processes and devices, in particular those for the recording, copying and reproduction of phonograms

Country Status (1)

Country Link
FR (1) FR731418A (en)

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