FR679074A - Perfectionnements aux compas magnétiques liquides - Google Patents

Perfectionnements aux compas magnétiques liquides

Info

Publication number
FR679074A
FR679074A FR679074DA FR679074A FR 679074 A FR679074 A FR 679074A FR 679074D A FR679074D A FR 679074DA FR 679074 A FR679074 A FR 679074A
Authority
FR
France
Prior art keywords
liquid magnetic
magnetic compasses
compasses
liquid
magnetic
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)
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.)
L DOIGNON ATEL
Original Assignee
L DOIGNON ATEL
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 L DOIGNON ATEL filed Critical L DOIGNON ATEL
Application granted granted Critical
Publication of FR679074A publication Critical patent/FR679074A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR679074D 1928-11-30 1928-11-30 Perfectionnements aux compas magnétiques liquides Expired FR679074A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR679074T 1928-11-30

Publications (1)

Publication Number Publication Date
FR679074A true FR679074A (fr) 1930-04-08

Family

ID=9021457

Family Applications (1)

Application Number Title Priority Date Filing Date
FR679074D Expired FR679074A (fr) 1928-11-30 1928-11-30 Perfectionnements aux compas magnétiques liquides

Country Status (1)

Country Link
FR (1) FR679074A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775045A (en) * 1954-05-04 1956-12-25 American Machine & Metals Liquid filled magnetic compass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775045A (en) * 1954-05-04 1956-12-25 American Machine & Metals Liquid filled magnetic compass

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