Patent DE-1915-309968
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Hollow tire (?) which could be used to reduce the weight of aircraft. Though the text only mentions the aviation application, the patent is classified as 77h by the German office. (Perhaps few other applications could be envisioned.)
- Inventor location: Hannover, Fundstraße 20
Sources
- Zeitschrift für Flugtechnik und Motorluftschiffahrt vol. 9 (1918) issue 23–24, p. 164.
- Original patent document and Bibliographic info at DPMA
- Original patent document and bibliography entry at espacenet
| Year filed | 1915 |
|---|---|
| Year granted | 1918 |
| Office | DE |
| Patent number | 309968 |
| Inventors | Hans Grünewald |
| Inventor country | DE |
| Applicant person | |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Hohle Radbereifung aus Zellstoff |
| English title | Hollow cellulose tire |
| Tech fields | material, cellulose |
| Filing date | 1915-12-17 |
| Full specification filed date | |
| Application number | |
| Grant date | 1918-12-28 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | |
| Patent agent | |
| Assigned to | |
| National tech categories | DE 77h.9 |
| IPCs | IPC B60C7/04, CPC B64C25/36 |
| CPCs | B60C3/02 |
| Family year | |
| 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 | 1 |
| Number of claims | 2 |
