FR623957A - Improvements to air navigation devices - Google Patents

Improvements to air navigation devices

Info

Publication number
FR623957A
FR623957A FR623957DA FR623957A FR 623957 A FR623957 A FR 623957A FR 623957D A FR623957D A FR 623957DA FR 623957 A FR623957 A FR 623957A
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
Thomas Daniel Kelly
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 FR623957A publication Critical patent/FR623957A/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
FR623957D 1925-11-02 1926-10-30 Improvements to air navigation devices Expired FR623957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB623957X 1925-11-02

Publications (1)

Publication Number Publication Date
FR623957A true FR623957A (en) 1927-07-05

Family

ID=10488101

Family Applications (1)

Application Number Title Priority Date Filing Date
FR623957D Expired FR623957A (en) 1925-11-02 1926-10-30 Improvements to air navigation devices

Country Status (1)

Country Link
FR (1) FR623957A (en)

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