FR493280A - Double périscope - Google Patents

Double périscope

Info

Publication number
FR493280A
FR493280A FR493280DA FR493280A FR 493280 A FR493280 A FR 493280A FR 493280D A FR493280D A FR 493280DA FR 493280 A FR493280 A FR 493280A
Authority
FR
France
Prior art keywords
periscope
double
double periscope
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
Earl West
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR493280A publication Critical patent/FR493280A/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)
FR493280D 1918-11-23 1918-11-23 Double périscope Expired FR493280A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR493280T 1918-11-23

Publications (1)

Publication Number Publication Date
FR493280A true FR493280A (fr) 1919-08-05

Family

ID=1529044

Family Applications (1)

Application Number Title Priority Date Filing Date
FR493280D Expired FR493280A (fr) 1918-11-23 1918-11-23 Double périscope

Country Status (1)

Country Link
FR (1) FR493280A (fr)

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