FR1104821A - Improvements to spectacle systems - Google Patents

Improvements to spectacle systems

Info

Publication number
FR1104821A
FR1104821A FR1104821DA FR1104821A FR 1104821 A FR1104821 A FR 1104821A FR 1104821D A FR1104821D A FR 1104821DA FR 1104821 A FR1104821 A FR 1104821A
Authority
FR
France
Prior art keywords
spectacle
systems
spectacle systems
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.)
Kapella Ltd
Original Assignee
Kapella Ltd
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 Kapella Ltd filed Critical Kapella Ltd
Application granted granted Critical
Publication of FR1104821A publication Critical patent/FR1104821A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14Viewfinders

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR1104821D 1953-05-01 1954-04-30 Improvements to spectacle systems Expired FR1104821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1104821X 1953-05-01

Publications (1)

Publication Number Publication Date
FR1104821A true FR1104821A (en) 1955-11-24

Family

ID=10874351

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1104821D Expired FR1104821A (en) 1953-05-01 1954-04-30 Improvements to spectacle systems

Country Status (1)

Country Link
FR (1) FR1104821A (en)

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