FR887423A - - Google Patents

Info

Publication number
FR887423A
FR887423A FR887423DA FR887423A FR 887423 A FR887423 A FR 887423A FR 887423D A FR887423D A FR 887423DA FR 887423 A FR887423 A FR 887423A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR887423A publication Critical patent/FR887423A/fr
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)
FR887423D Expired FR887423A (zh)

Publications (1)

Publication Number Publication Date
FR887423A true FR887423A (zh) 1943-11-12

Family

ID=1556477

Family Applications (1)

Application Number Title Priority Date Filing Date
FR887423D Expired FR887423A (zh)

Country Status (1)

Country Link
FR (1) FR887423A (zh)

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