FR499672A - - Google Patents
Info
- Publication number
- FR499672A FR499672A FR499672DA FR499672A FR 499672 A FR499672 A FR 499672A FR 499672D A FR499672D A FR 499672DA FR 499672 A FR499672 A FR 499672A
- Authority
- FR
- France
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
- B64C11/48—Units of two or more coaxial propellers
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR499672A true FR499672A (OSRAM) | 1920-02-18 |
Family
ID=1534675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR499672D Expired FR499672A (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR499672A (OSRAM) |
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0
- FR FR499672D patent/FR499672A/fr not_active Expired