FR433676A - Periscope improvement - Google Patents

Periscope improvement

Info

Publication number
FR433676A
FR433676A FR433676DA FR433676A FR 433676 A FR433676 A FR 433676A FR 433676D A FR433676D A FR 433676DA FR 433676 A FR433676 A FR 433676A
Authority
FR
France
Prior art keywords
periscope
improvement
periscope improvement
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.)
Electric Boat Corp
Original Assignee
Electric Boat Corp
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 Electric Boat Corp filed Critical Electric Boat Corp
Application granted granted Critical
Publication of FR433676A publication Critical patent/FR433676A/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)
FR433676D 1910-10-08 1911-08-28 Periscope improvement Expired FR433676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US433676XA 1910-10-08 1910-10-08

Publications (1)

Publication Number Publication Date
FR433676A true FR433676A (en) 1912-01-13

Family

ID=1475652

Family Applications (1)

Application Number Title Priority Date Filing Date
FR433676D Expired FR433676A (en) 1910-10-08 1911-08-28 Periscope improvement

Country Status (1)

Country Link
FR (1) FR433676A (en)

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