Patent US-1890-439421
Jump to navigation
Jump to search
A "governor" for stabilizing course; hanging weighted ball lowers the vessel's center of gravity and renders it controllable by the operator
- Inventor location: San Francisco, CA (FIPSloc=6075, imputed by HistPat)
Patents which are supplementary to this one
- Patent DE-1890-57468 (English title: Airship with adjustable ballast container, Filing date: 1890-09-11)
- Patent GB-1891-4485 (English title: Navigable balloon, Filing date: 1891-03-12)
Sources
- Patent 439421 document and bibliographic info on espacenet
- Patent 439421 at google patents
- Short's DB
- PTO 244
| Year filed | 1889 |
|---|---|
| Year granted | 1890 |
| Office | US |
| Patent number | 439421 |
| Inventors | Perham Wilhelm Nahl |
| Inventor country | US |
| Inventor location | |
| Applicant person | Perham Wilhelm Nahl |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Navigable Air-Ship |
| English title | Navigable airship |
| Tech fields | LTA, stability, navigation, dirigible, electricity, navigation, gas |
| Filing date | November 25, 1889 |
| Full specification filed date | |
| Application number | |
| Grant date | October 28, 1890 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | Yes |
| Serial number | 362559 |
| Patent agent | John L. Boone |
| Assigned to | |
| National tech categories | USPC 244/93 |
| IPCs | IPC B64C17/00 |
| CPCs | CPC B64C17/00 |
| Family year | 1889 |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 46311308 |
| INPADOC family ID | |
| Number of text pages | 2 |
| Number of diagram pages | 2 |
| Number of figures | 6 |
| Number of claims | 3 |
