Patent US-1908-940866
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Propeller wheel with flexible blades, which expand on downstroke and contract on upstroke; adjustable position; multiple smaller concave aeroplanes next to primary wings
Inventor location: Baltimore city, Maryland
Sources
- Short's DB
- PTO 244
- Neilson
- Patent 940866 document and bibliographic info on espacenet
- Patent 940866 at google patents
| Year filed | 1908 |
|---|---|
| Year granted | 1909 |
| Office | US |
| Patent number | 940866 |
| Inventors | Albert Hugo Friedel |
| Inventor country | US |
| Applicant person | Albert Hugo Friedel |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Flying-machine |
| English title | Flying-machine |
| Tech fields | propulsion, navigation, aerodynamics, stability |
| Filing date | May 19, 1808 |
| Full specification filed date | |
| Application number | 1908433713 |
| Grant date | November 23, 1909 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | Yes |
| Serial number | 433713 |
| Patent agent | R. S. & A. B. Lacey |
| Assigned to | 1 |
| National tech categories | USPC 244/20 |
| IPCs | |
| CPCs | CPC B64C39/005 |
| Family year | 1908 |
| First filing? | Yes |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 47247098 |
| INPADOC family ID | 43857395 |
| Number of text pages | 2 |
| Number of diagram pages | 3 |
| Number of figures | 9 |
| Number of claims | 12 |
