FR479020A - Improvements to magnetic compasses - Google Patents

Improvements to magnetic compasses

Info

Publication number
FR479020A
FR479020A FR479020DA FR479020A FR 479020 A FR479020 A FR 479020A FR 479020D A FR479020D A FR 479020DA FR 479020 A FR479020 A FR 479020A
Authority
FR
France
Prior art keywords
magnetic compasses
compasses
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
French (fr)
Inventor
Frank Osborne Creagh-Osborne
Arthur Joseph Hughes
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.)
FRANK OSBORNE CREAGH OSBORNE
Hughes Henry and Son Ltd
Original Assignee
FRANK OSBORNE CREAGH OSBORNE
Hughes Henry and Son Ltd
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 FRANK OSBORNE CREAGH OSBORNE, Hughes Henry and Son Ltd filed Critical FRANK OSBORNE CREAGH OSBORNE
Application granted granted Critical
Publication of FR479020A publication Critical patent/FR479020A/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)
FR479020D 1915-06-14 1915-06-14 Improvements to magnetic compasses Expired FR479020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR479020T 1915-06-14

Publications (1)

Publication Number Publication Date
FR479020A true FR479020A (en) 1916-02-02

Family

ID=1516455

Family Applications (1)

Application Number Title Priority Date Filing Date
FR479020D Expired FR479020A (en) 1915-06-14 1915-06-14 Improvements to magnetic compasses

Country Status (1)

Country Link
FR (1) FR479020A (en)

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