FR337575A - Improvements in altiscopes and other similar instruments - Google Patents

Improvements in altiscopes and other similar instruments

Info

Publication number
FR337575A
FR337575A FR337575DA FR337575A FR 337575 A FR337575 A FR 337575A FR 337575D A FR337575D A FR 337575DA FR 337575 A FR337575 A FR 337575A
Authority
FR
France
Prior art keywords
altiscopes
similar instruments
instruments
similar
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 FR337575A publication Critical patent/FR337575A/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)
FR337575D 1903-12-10 1903-12-10 Improvements in altiscopes and other similar instruments Expired FR337575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR337575T 1903-12-10

Publications (1)

Publication Number Publication Date
FR337575A true FR337575A (en) 1904-04-15

Family

ID=1386917

Family Applications (1)

Application Number Title Priority Date Filing Date
FR337575D Expired FR337575A (en) 1903-12-10 1903-12-10 Improvements in altiscopes and other similar instruments

Country Status (1)

Country Link
FR (1) FR337575A (en)

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