FR40158E - Improvements to guide compasses - Google Patents

Improvements to guide compasses

Info

Publication number
FR40158E
FR40158E FR40158DA FR40158E FR 40158 E FR40158 E FR 40158E FR 40158D A FR40158D A FR 40158DA FR 40158 E FR40158 E FR 40158E
Authority
FR
France
Prior art keywords
compasses
guide
guide 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
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR40158E publication Critical patent/FR40158E/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
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR40158D 1931-04-25 1931-04-25 Improvements to guide compasses Expired FR40158E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR40158T 1931-04-25

Publications (1)

Publication Number Publication Date
FR40158E true FR40158E (en) 1932-06-07

Family

ID=8676471

Family Applications (1)

Application Number Title Priority Date Filing Date
FR40158D Expired FR40158E (en) 1931-04-25 1931-04-25 Improvements to guide compasses

Country Status (1)

Country Link
FR (1) FR40158E (en)

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