Patent GB-1912-19338
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This British patent most closely matches Patent AT-1911-57606, which is itself an addition to Patent AT-1909-47656.
Sources
- Original patent document and bibliography entry on espacenet
- on google patents
- Inventor location: 40, Böhmen, Beamte, Prague, Bohemia, Austria
- Inventor occupation: Bank Official
| Year filed | 1912 |
|---|---|
| Year granted | 1912 |
| Office | GB |
| Patent number | 19338 |
| Inventors | Jaroslav Engler |
| Inventor country | AT |
| Applicant person | Jaroslav Engler |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | An Improved Spiral Propeller |
| English title | An Improved Spiral Propeller |
| Tech fields | propellers |
| Filing date | 1912-08-23 |
| Full specification filed date | |
| Application number | |
| Grant date | 1912-12-05 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | Patent AT-1911-57606, Patent AT-1909-47656 |
| Related to aircraft? | 1/2 |
| Serial number | |
| Patent agent | Boult, Wade & Tennant |
| Assigned to | |
| National tech categories | |
| IPCs | IPC B63H1/12 |
| CPCs | CPC B63H1/12, CPC B63H1/26, CPC B64C11/005, CPC B63H2001/122, CPC B63H2001/145 |
| Family year | 1909 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | 1 |
| Number of diagram pages | 1 |
| Number of figures | 2 |
| Number of claims | 2 |
