FR571957A - Hélicoptère - Google Patents
HélicoptèreInfo
- Publication number
- FR571957A FR571957A FR571957DA FR571957A FR 571957 A FR571957 A FR 571957A FR 571957D A FR571957D A FR 571957DA FR 571957 A FR571957 A FR 571957A
- Authority
- FR
- France
- Prior art keywords
- helicopter
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/12—Rotor drives
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US571957XA | 1922-08-21 | 1922-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR571957A true FR571957A (fr) | 1924-05-27 |
Family
ID=22009079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR571957D Expired FR571957A (fr) | 1922-08-21 | 1923-08-21 | Hélicoptère |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR571957A (fr) |
-
1923
- 1923-08-21 FR FR571957D patent/FR571957A/fr not_active Expired
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