FR839171A - Photographic enlargement and reproduction apparatus - Google Patents

Photographic enlargement and reproduction apparatus

Info

Publication number
FR839171A
FR839171A FR839171DA FR839171A FR 839171 A FR839171 A FR 839171A FR 839171D A FR839171D A FR 839171DA FR 839171 A FR839171 A FR 839171A
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 FR839171A publication Critical patent/FR839171A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/005—Diaphragms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR839171D 1937-07-30 1938-06-10 Photographic enlargement and reproduction apparatus Expired FR839171A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE839171X 1937-07-30

Publications (1)

Publication Number Publication Date
FR839171A true FR839171A (en) 1939-03-28

Family

ID=6761859

Family Applications (1)

Application Number Title Priority Date Filing Date
FR839171D Expired FR839171A (en) 1937-07-30 1938-06-10 Photographic enlargement and reproduction apparatus

Country Status (1)

Country Link
FR (1) FR839171A (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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