Patent SE-1908-29342
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- Inventor location: Mexico City. Dufwa emigrated from Sweden to Mexico. He cites his Swedish patent, and this is a foreign filing of it. He was in Mexico City for most of his early aero work.
- Inventor occupation: Gymnastikdirektör -- Director of Gymnastics. (Elsewhere he's been called a physician)
- Parent patent was filed 1908-07-31
Patent family descending from Patent SE-1908-29342
- Patent SE-1908-29342 (English title: Balancing device for flying machines, Filing date: 1908-07-31, National tech categories: SE 62b • SE 70a)
- Patent FR-1908-394168 (English title: Balancing equipment for flying machines, Supplementary to patent: Patent SE-1908-29342, Filing date: 1908-08-29, National tech categories: FR 6.4)
Sources
- Original patent document and bibliography entry on espacenet
- Swedish historical patent database - search for Dufwa
| Year filed | 1908 |
|---|---|
| Year granted | 1910 |
| Office | SE |
| Patent number | 29342 |
| Inventors | Fredrik Wilhelm Dufwa |
| Inventor country | MX |
| Inventor location | Mexico City |
| Applicant person | Fredrik Wilhelm Dufwa |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Balansanordning vid flygmaskiner |
| English title | Balancing device for flying machines |
| Tech fields | balance, stability |
| Filing date | 1908-07-31 |
| Full specification filed date | |
| Application number | |
| Grant date | 1910-08-03 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | |
| Patent agent | John Edberg |
| Assigned to | |
| National tech categories | SE 62b, SE 70a |
| IPCs | |
| CPCs | |
| Family year | 1908 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | 2 |
| Number of diagram pages | 2 |
| Number of figures | 17 |
| Number of claims | 6 |
