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FR834086A - Improvement in photosonic reproduction devices - Google Patents

Improvement in photosonic reproduction devices

Info

Publication number
FR834086A
FR834086A FR834086DA FR834086A FR 834086 A FR834086 A FR 834086A FR 834086D A FR834086D A FR 834086DA FR 834086 A FR834086 A FR 834086A
Authority
FR
France
Prior art keywords
photosonic
improvement
reproduction devices
reproduction
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)
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 by Zeiss Ikon AG filed Critical Zeiss Ikon AG
Application granted granted Critical
Publication of FR834086A publication Critical patent/FR834086A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR834086D 1937-05-04 1938-02-21 Improvement in photosonic reproduction devices Expired FR834086A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE834086X 1937-05-04

Publications (1)

Publication Number Publication Date
FR834086A true FR834086A (en) 1938-11-10

Family

ID=6760569

Family Applications (1)

Application Number Title Priority Date Filing Date
FR834086D Expired FR834086A (en) 1937-05-04 1938-02-21 Improvement in photosonic reproduction devices

Country Status (1)

Country Link
FR (1) FR834086A (en)

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