Patent DE-1890-57468
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Original in US. As seen in other cases the German version is shorter and omits description seemingly important parts of the aircraft (the hand-wheel, the batteries, the 'gasometer-chambers'). Because not novel?
- Inventor location: San Francisco
Sources
- Original patent doc at Lilienthal museum website
- Archive record of this patent at Lilienthal museum patents
- Original patent document and Bibliographic info at DPMA
- Original patent document and bibliography entry at espacenet
| Year filed | 1890 |
|---|---|
| Year granted | 1891 |
| Office | DE |
| Patent number | 57468 |
| Inventors | Perham Wilhelm Nahl |
| Inventor country | US |
| Applicant person | Perham Wilhelm Nahl |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Luftschiff mit verstellbaren Ballastbehälter |
| English title | Airship with adjustable ballast container |
| Tech fields | ballast, LTA, propulsion, stability |
| Filing date | September 11, 1890 |
| Full specification filed date | |
| Application number | |
| Grant date | July 7, 1891 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | Patent US-1890-439421 |
| Related to aircraft? | Yes |
| Serial number | |
| Patent agent | |
| Assigned to | |
| National tech categories | DE 77 |
| IPCs | |
| CPCs | |
| Family year | 1890 |
| First filing? | Yes |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | 2 |
| Number of diagram pages | 1 |
| Number of figures | 6 |
| Number of claims | 1 |
