FR431275A - Compass for aviation, dry or liquid - Google Patents

Compass for aviation, dry or liquid

Info

Publication number
FR431275A
FR431275A FR431275DA FR431275A FR 431275 A FR431275 A FR 431275A FR 431275D A FR431275D A FR 431275DA FR 431275 A FR431275 A FR 431275A
Authority
FR
France
Prior art keywords
compass
aviation
dry
liquid
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
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 FR431275A publication Critical patent/FR431275A/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
FR431275D 1910-08-25 1911-05-18 Compass for aviation, dry or liquid Expired FR431275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR419682T 1910-08-25

Publications (1)

Publication Number Publication Date
FR431275A true FR431275A (en) 1911-11-07

Family

ID=1462889

Family Applications (2)

Application Number Title Priority Date Filing Date
FR419682D Expired FR419682A (en) 1910-08-25 1910-08-25 Compass for air navigation
FR431275D Expired FR431275A (en) 1910-08-25 1911-05-18 Compass for aviation, dry or liquid

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR419682D Expired FR419682A (en) 1910-08-25 1910-08-25 Compass for air navigation

Country Status (1)

Country Link
FR (2) FR419682A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855696A (en) * 1957-04-15 1958-10-14 Malcolm R Griswold Magnetic compasses
US3177591A (en) * 1962-10-25 1965-04-13 William S Jolley Compass with means for correcting angle of declination

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855696A (en) * 1957-04-15 1958-10-14 Malcolm R Griswold Magnetic compasses
US3177591A (en) * 1962-10-25 1965-04-13 William S Jolley Compass with means for correcting angle of declination

Also Published As

Publication number Publication date
FR419682A (en) 1911-01-12

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