Patent US-1900-640184
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concentric revolving 'buckets'
- Inventor location (imputed by HistPat): Toledo, Lucas county, OH (FIPSloc=39095)
Sources
- Patent 640184 document and bibliographic info on espacenet
- Patent 640184 at google patents
- Short's DB
| Year filed | 1899 |
|---|---|
| Year granted | 1900 |
| Office | US |
| Patent number | 640184 |
| Inventors | Andrew Duffner, Jr. |
| Inventor country | US |
| Applicant person | Andrew Duffner, Jr. |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Air-Propeller |
| English title | Air propeller |
| Tech fields | propeller |
| Filing date | April 15, 1899 |
| Full specification filed date | |
| Application number | |
| Grant date | January 2, 1900 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | Yes |
| Serial number | 713110 |
| Patent agent | |
| Assigned to | |
| National tech categories | USPC 416/179 |
| IPCs | |
| CPCs | CPC F04D29/225 |
| Family year | 1900 |
| First filing? | Yes |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | |
| Number of diagram pages | |
| Number of figures | |
| Number of claims |
