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.)
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Electric Boat Corp
Original Assignee
Electric Boat Corp
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Publication date
Application filed by Electric Boat CorpfiledCriticalElectric Boat Corp
Application grantedgrantedCritical
Publication of FR337549ApublicationCriticalpatent/FR337549A/fr
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)
FR337549D1903-12-091903-12-09Perfectionnements dans les altiscopes pour bateaux sous-marins
ExpiredFR337549A
(fr)