FR679581A - Direction finder compass - Google Patents

Direction finder compass

Info

Publication number
FR679581A
FR679581A FR679581DA FR679581A FR 679581 A FR679581 A FR 679581A FR 679581D A FR679581D A FR 679581DA FR 679581 A FR679581 A FR 679581A
Authority
FR
France
Prior art keywords
compass
direction finder
finder
finder compass
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.)
PERRYMAN ELECTRIC CO
Original Assignee
PERRYMAN ELECTRIC CO
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 PERRYMAN ELECTRIC CO filed Critical PERRYMAN ELECTRIC CO
Application granted granted Critical
Publication of FR679581A publication Critical patent/FR679581A/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
    • G01C17/02—Magnetic compasses
    • G01C17/28—Electromagnetic compasses
    • G01C17/32—Electron compasses

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR679581D 1928-12-05 1929-07-30 Direction finder compass Expired FR679581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US679581XA 1928-12-05 1928-12-05

Publications (1)

Publication Number Publication Date
FR679581A true FR679581A (en) 1930-04-15

Family

ID=22079531

Family Applications (1)

Application Number Title Priority Date Filing Date
FR679581D Expired FR679581A (en) 1928-12-05 1929-07-30 Direction finder compass

Country Status (1)

Country Link
FR (1) FR679581A (en)

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