FR9122E - Perfectionnements apportés aux compas pour navires - Google Patents

Perfectionnements apportés aux compas pour navires

Info

Publication number
FR9122E
FR9122E FR9122DA FR9122E FR 9122 E FR9122 E FR 9122E FR 9122D A FR9122D A FR 9122DA FR 9122 E FR9122 E FR 9122E
Authority
FR
France
Prior art keywords
compasses
ship
improvements made
ship compasses
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
English (en)
Inventor
Abel-Louis Doignon
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.)
ABEL-LOUIS DOIGNON
Original Assignee
ABEL-LOUIS DOIGNON
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 ABEL-LOUIS DOIGNON filed Critical ABEL-LOUIS DOIGNON
Application granted granted Critical
Publication of FR9122E publication Critical patent/FR9122E/fr
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
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
    • G01C17/20—Observing the compass card or needle
    • G01C17/24—Illumination

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR9122D 1903-05-25 1908-03-27 Perfectionnements apportés aux compas pour navires Expired FR9122E (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR332362T 1903-05-25
FR9122T 1908-03-27

Publications (1)

Publication Number Publication Date
FR9122E true FR9122E (fr) 1908-08-29

Family

ID=1351718

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9122D Expired FR9122E (fr) 1903-05-25 1908-03-27 Perfectionnements apportés aux compas pour navires

Country Status (1)

Country Link
FR (1) FR9122E (fr)

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