Patent US-1901-694356
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Improved propeller blade shape
- Tech classes: CPC F01D5/145: Means for influencing boundary layers or secondary circulations; CPC Y02E10/72: Wind turbines with rotation axis in wind direction
- Inventor location: Mexico City, Mexico (Sweden/Norway) ("a subject of the King of Sweden and Norway, residing at the city of Mexico, in the Republic of Mexico")
Sources
- Patent 694356 document and bibliographic info on espacenet
- Patent 694356 at google patents
- Short's DB
| Year filed | 1901 |
|---|---|
| Year granted | 1902 |
| Office | US |
| Patent number | 694356 |
| Inventors | Frederick Dufwa |
| Inventor country | MX |
| Applicant person | Frederick Dufwa |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Blade for propellers for air-ships |
| English title | Blade for propellers for air-ships |
| Tech fields | propulsion, propeller, airship |
| Filing date | 1901-05-15 |
| Full specification filed date | |
| Application number | |
| Grant date | 1902-03-04 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | 60278 |
| Patent agent | Briesen & Knauth |
| Assigned to | |
| National tech categories | USPC 416/231R, USPC 416/235 |
| IPCs | |
| CPCs | CPC F01D5/145, CPC Y02E10/72 |
| Family year | 1901 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | 0 |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | 2 |
| Number of diagram pages | 1 |
| Number of figures | 3 |
| Number of claims | 2 |
