Patent US-1920-1331221
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- Tech class CPC B64C23/005: Influencing air-flow over aircraft surfaces, ..., e.g. by electric charges, magnetic panels, piezoelectric elements, static charges or ultrasounds
- Inventor location: Marshall, Lyon county, MN
Sources
- Patent 1331221 document and bibliographic info on espacenet
- Patent 1331221 at google patents
| Year filed | 1918 |
|---|---|
| Year granted | 1920 |
| Office | US |
| Patent number | 1331221 |
| Inventors | Carl R. Swanson |
| Inventor country | US |
| Applicant person | Carl R. Swanson |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Aeroplane |
| English title | Aeroplane |
| Tech fields | propellers, whole |
| Filing date | 1918-10-10 |
| Full specification filed date | |
| Application number | 25759918 |
| Grant date | 1920-02-17 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | 257599 |
| Patent agent | W. J. FitzGerald |
| Assigned to | |
| National tech categories | USPC 244/23R, USPC 244/50 |
| IPCs | IPC B64C23/00 |
| CPCs | CPC B64C2700/6274, CPC B64C23/005 |
| Family year | 1918 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | 4 |
| Application ID | 49069258 |
| INPADOC family ID | 44620759 |
| Number of text pages | 3 |
| Number of diagram pages | 3 |
| Number of figures | 6 |
| Number of claims | 4 |
