FR734309A - Improvement in panoramic type glasses - Google Patents

Improvement in panoramic type glasses

Info

Publication number
FR734309A
FR734309A FR734309DA FR734309A FR 734309 A FR734309 A FR 734309A FR 734309D A FR734309D A FR 734309DA FR 734309 A FR734309 A FR 734309A
Authority
FR
France
Prior art keywords
improvement
type glasses
panoramic type
panoramic
glasses
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.)
Optique et Precision de Levallois SA
Original Assignee
Optique et Precision de Levallois SA
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 Optique et Precision de Levallois SA filed Critical Optique et Precision de Levallois SA
Application granted granted Critical
Publication of FR734309A publication Critical patent/FR734309A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/08—Periscopes

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR734309D 1931-06-29 1931-06-29 Improvement in panoramic type glasses Expired FR734309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR734309T 1931-06-29

Publications (1)

Publication Number Publication Date
FR734309A true FR734309A (en) 1932-10-19

Family

ID=9128642

Family Applications (1)

Application Number Title Priority Date Filing Date
FR734309D Expired FR734309A (en) 1931-06-29 1931-06-29 Improvement in panoramic type glasses

Country Status (1)

Country Link
FR (1) FR734309A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678580A (en) * 1950-03-20 1954-05-18 Richard T Erban Image inverting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678580A (en) * 1950-03-20 1954-05-18 Richard T Erban Image inverting apparatus

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