FR521251A - Apparatus for determining the height of an aerial goal - Google Patents

Apparatus for determining the height of an aerial goal

Info

Publication number
FR521251A
FR521251A FR521251A FR521251DA FR521251A FR 521251 A FR521251 A FR 521251A FR 521251 A FR521251 A FR 521251A FR 521251D A FR521251D A FR 521251DA FR 521251 A FR521251 A FR 521251A
Authority
FR
France
Prior art keywords
aerial
goal
height
determining
aerial goal
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
FR521251A
Other languages
French (fr)
Inventor
Nils Overaas
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.)
NILS OEVERAAS
Original Assignee
NILS OEVERAAS
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 NILS OEVERAAS filed Critical NILS OEVERAAS
Application granted granted Critical
Publication of FR521251A publication Critical patent/FR521251A/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
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR521251A 1917-08-01 1920-07-27 Apparatus for determining the height of an aerial goal Expired FR521251A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO521251X 1917-08-01

Publications (1)

Publication Number Publication Date
FR521251A true FR521251A (en) 1921-07-09

Family

ID=19905941

Family Applications (1)

Application Number Title Priority Date Filing Date
FR521251A Expired FR521251A (en) 1917-08-01 1920-07-27 Apparatus for determining the height of an aerial goal

Country Status (1)

Country Link
FR (1) FR521251A (en)

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