FR48851E - Improvements to sighting devices, and in particular to sextant-type devices - Google Patents

Improvements to sighting devices, and in particular to sextant-type devices

Info

Publication number
FR48851E
FR48851E FR48851DA FR48851E FR 48851 E FR48851 E FR 48851E FR 48851D A FR48851D A FR 48851DA FR 48851 E FR48851 E FR 48851E
Authority
FR
France
Prior art keywords
devices
sextant
sighting
type
type devices
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.)
Boyelle & Beau
Original Assignee
Boyelle & Beau
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 Boyelle & Beau filed Critical Boyelle & Beau
Application granted granted Critical
Publication of FR48851E publication Critical patent/FR48851E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C1/00—Measuring angles
    • G01C1/08—Sextants
    • G01C1/10—Sextants including an artificial horizon

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR48851D 1937-03-16 1937-03-16 Improvements to sighting devices, and in particular to sextant-type devices Expired FR48851E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR48851T 1937-03-16

Publications (1)

Publication Number Publication Date
FR48851E true FR48851E (en) 1938-09-19

Family

ID=8684113

Family Applications (1)

Application Number Title Priority Date Filing Date
FR48851D Expired FR48851E (en) 1937-03-16 1937-03-16 Improvements to sighting devices, and in particular to sextant-type devices

Country Status (1)

Country Link
FR (1) FR48851E (en)

Similar Documents

Publication Publication Date Title
FR847141A (en) Improvements to screws and screwdrivers
FR48851E (en) Improvements to sighting devices, and in particular to sextant-type devices
FR813695A (en) Improvements to devices such as radio-compasses
FR832861A (en) Improvements to radiobeacons and radio alignments
FR836335A (en) Improvements to refrigeration devices
FR815837A (en) Improvements to sighting devices, and in particular to sextant-type devices
FR835906A (en) Improvements to drawing devices
FR843169A (en) Improvements to humidifying and refrigerating devices
FR820614A (en) Improvements to gyroscopic devices
FR835343A (en) Improvements to electrical systems
FR48487E (en) Improvements made to steering devices and in particular to compasses
FR842815A (en) Improvements to cash registers and similar devices
FR984486A (en) Improvements in devices such as rachoelectric devices
FR843590A (en) Improvements made to devices to be calculated, in particular those for air navigation
FR845986A (en) Improvements to television sets
FR833048A (en) Improvements to calculating devices
FR847638A (en) Improvements to gyroscopic devices
FR834079A (en) Improvements to theodolites, and more specifically to tracking theodolites
FR828381A (en) Improvements to weighing devices
FR48508E (en) Improvements to lighters, lighters and similar devices
FR834786A (en) Improvements to advertising devices
FR913264A (en) Improvements to refrigeration devices
FR839468A (en) Improvements in gyroscopic instruments
FR831154A (en) Improvements in gyroscopic instruments
FR829307A (en) Improvements in telephotography and similar devices