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FR1047808A - Compte-fils lumineux - Google Patents

Compte-fils lumineux

Info

Publication number
FR1047808A
FR1047808A FR1047808DA FR1047808A FR 1047808 A FR1047808 A FR 1047808A FR 1047808D A FR1047808D A FR 1047808DA FR 1047808 A FR1047808 A FR 1047808A
Authority
FR
France
Prior art keywords
illuminated
thread counter
counter
thread
illuminated thread
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
English (en)
Inventor
Pierre-Maurice Pizon
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 FR1047808A publication Critical patent/FR1047808A/fr
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00Eyepieces; Magnifying glasses
    • G02B25/02Eyepieces; Magnifying glasses with means for illuminating object viewed

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR1047808D 1951-06-13 1951-06-13 Compte-fils lumineux Expired FR1047808A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1047808T 1951-06-13

Publications (1)

Publication Number Publication Date
FR1047808A true FR1047808A (fr) 1953-12-17

Family

ID=9593046

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1047808D Expired FR1047808A (fr) 1951-06-13 1951-06-13 Compte-fils lumineux

Country Status (1)

Country Link
FR (1) FR1047808A (fr)

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