FR433676A - Periscope improvement - Google Patents

Periscope improvement

Info

Publication number: FR433676A
Authority: FR; France
Prior art keywords: periscope; improvement; periscope improvement
Prior art date: 1910-10-08
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

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.)

1910-10-08

Filing date

1911-08-28

Publication date

1912-01-13

1911-08-28 Application filed by Electric Boat Corp filed Critical Electric Boat Corp

1912-01-13 Application granted granted Critical

1912-01-13 Publication of FR433676A publication Critical patent/FR433676A/en

Status Expired legal-status Critical Current

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)

1911
- 1911-08-28 FR FR433676D patent/FR433676A/en not_active Expired

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