FR440256A - Périscope perfectionné - Google Patents

Périscope perfectionné

Info

Publication number
FR440256A
FR440256A FR440256DA FR440256A FR 440256 A FR440256 A FR 440256A FR 440256D A FR440256D A FR 440256DA FR 440256 A FR440256 A FR 440256A
Authority
FR
France
Prior art keywords
periscope
perfected
periscope perfected
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
Alexandre Dufour
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.)
ALEXANDRE DUFOUR
Original Assignee
ALEXANDRE DUFOUR
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 ALEXANDRE DUFOUR filed Critical ALEXANDRE DUFOUR
Application granted granted Critical
Publication of FR440256A publication Critical patent/FR440256A/fr
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)
FR440256D 1911-04-29 1911-04-29 Périscope perfectionné Expired FR440256A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR440256T 1911-04-29

Publications (1)

Publication Number Publication Date
FR440256A true FR440256A (fr) 1912-07-06

Family

ID=1481618

Family Applications (1)

Application Number Title Priority Date Filing Date
FR440256D Expired FR440256A (fr) 1911-04-29 1911-04-29 Périscope perfectionné

Country Status (1)

Country Link
FR (1) FR440256A (fr)

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