Difference between revisions of "Patent DE-1905-175477"
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| Line 25: | Line 25: | ||
|Full specification filed date= | |Full specification filed date= | ||
|Application number= | |Application number= | ||
| − | |Grant date= | + | |Grant date=1906/09/29 |
|Granted=1 | |Granted=1 | ||
|Publication date=1906/09/29 | |Publication date=1906/09/29 | ||
| Line 33: | Line 33: | ||
|Patent agent= | |Patent agent= | ||
|Assigned to= | |Assigned to= | ||
| − | |National tech categories=DE 77h.6 | + | |National tech categories=DE 77h.6; DE 62c.1 |
| − | |IPCs= | + | |IPCs=IPC B64C11/00 |
|CPCs=CPC B64C11/006 | |CPCs=CPC B64C11/006 | ||
| − | |Family year= | + | |Family year=1902 |
|First filing=0 | |First filing=0 | ||
|Cites these patents= | |Cites these patents= | ||
Revision as of 22:26, 23 October 2021
Here is another patent on which the Patent Object on the Lilienthal website gives “Hofmann, Josef”, though the original only shows “J Hofmann”.
The title of the patent itself is simply “Schraubenpropeller”. The national tech classification which we would call DE 77h.6 is consistently printed on the original document. However, “Klasse 62c Gruppe 1” is pencilled in. This sort of thing happens on a few of Hofmann's German patent.
Sources
- Patent Objekt via Lilienthal museum patents
- Patent Digitalisat via Lilienthal museum patents
- Inventor location: Berlin
- Original patent document and Bibliographic info at DPMA
- Original patent document and bibliography entry at espacenet
| Year filed | 1905 |
|---|---|
| Year granted | 1906 |
| Office | DE |
| Patent number | 175477 |
| Inventors | Joseph Hofmann |
| Inventor country | DE |
| Applicant person | Joseph Hofmann |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Verbesserung der Schraubenpropeller nach Patent Nr. 141656 |
| English title | Improvement of screw propellers according to patent No. 141656 |
| Tech fields | Propellers, Propulsion, Airplane |
| Filing date | 1905-06-05 |
| Full specification filed date | |
| Application number | |
| Grant date | 1906/09/29 |
| Granted? | 1 |
| Publication date | 1906/09/29 |
| Supplementary to patent | Patent DE-1902-141656 |
| Related to aircraft? | 1 |
| Serial number | |
| Patent agent | |
| Assigned to | |
| National tech categories | DE 77h.6, DE 62c.1 |
| IPCs | IPC B64C11/00 |
| CPCs | CPC B64C11/006 |
| Family year | 1902 |
| First filing? | 0 |
| 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 | 3 |
| Number of claims | 1 |
