FR537972A - Improvements to air navigation devices - Google Patents

Improvements to air navigation devices

Info

Publication number
FR537972A
FR537972A FR537972DA FR537972A FR 537972 A FR537972 A FR 537972A FR 537972D A FR537972D A FR 537972DA FR 537972 A FR537972 A FR 537972A
Authority
FR
France
Prior art keywords
navigation devices
air navigation
air
devices
navigation
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
Raoul Pateras Pescara
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 filed Critical
Application granted granted Critical
Publication of FR537972A publication Critical patent/FR537972A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/04—Helicopters

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
FR537972D 1921-07-05 1921-07-05 Improvements to air navigation devices Expired FR537972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR537972T 1921-07-05

Publications (1)

Publication Number Publication Date
FR537972A true FR537972A (en) 1922-06-01

Family

ID=8927882

Family Applications (1)

Application Number Title Priority Date Filing Date
FR537972D Expired FR537972A (en) 1921-07-05 1921-07-05 Improvements to air navigation devices

Country Status (1)

Country Link
FR (1) FR537972A (en)

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