FR839172A - Photographic enlargement and reproduction apparatus - Google Patents

Photographic enlargement and reproduction apparatus

Info

Publication number
FR839172A
FR839172A FR839172DA FR839172A FR 839172 A FR839172 A FR 839172A FR 839172D A FR839172D A FR 839172DA FR 839172 A FR839172 A FR 839172A
Authority
FR
France
Prior art keywords
reproduction apparatus
photographic enlargement
enlargement
photographic
reproduction
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 FR839172A publication Critical patent/FR839172A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR839172D 1937-07-30 1938-06-10 Photographic enlargement and reproduction apparatus Expired FR839172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE839172X 1937-07-30

Publications (1)

Publication Number Publication Date
FR839172A true FR839172A (en) 1939-03-28

Family

ID=6761860

Family Applications (1)

Application Number Title Priority Date Filing Date
FR839172D Expired FR839172A (en) 1937-07-30 1938-06-10 Photographic enlargement and reproduction apparatus

Country Status (1)

Country Link
FR (1) FR839172A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458437A (en) * 1945-04-20 1949-01-04 Eastman Kodak Co Photographic gamma control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458437A (en) * 1945-04-20 1949-01-04 Eastman Kodak Co Photographic gamma control

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