FR553361A - Improvements in photographic lenses - Google Patents

Improvements in photographic lenses

Info

Publication number
FR553361A
FR553361A FR553361DA FR553361A FR 553361 A FR553361 A FR 553361A FR 553361D A FR553361D A FR 553361DA FR 553361 A FR553361 A FR 553361A
Authority
FR
France
Prior art keywords
photographic lenses
photographic
lenses
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
Christopher Graf
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 FR553361A publication Critical patent/FR553361A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR553361D 1922-06-27 1922-06-27 Improvements in photographic lenses Expired FR553361A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR553361T 1922-06-27

Publications (1)

Publication Number Publication Date
FR553361A true FR553361A (en) 1923-05-23

Family

ID=8938174

Family Applications (1)

Application Number Title Priority Date Filing Date
FR553361D Expired FR553361A (en) 1922-06-27 1922-06-27 Improvements in photographic lenses

Country Status (1)

Country Link
FR (1) FR553361A (en)

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