Patent FR-1920-509773
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This original makes priority date reference to a German patent filed 1916-03-04 and to a "brevet additionnel", also German, filed 1917-09-23.
Sources
- Original patent document and bibliography entry on espacenet
- on google patents
- Inventor location: Germany
This has to do with using treated animal tissue, as opposed to rubber, in the fabrication balloon envelopes.
| Year filed | 1920 |
|---|---|
| Year granted | 1920 |
| Office | FR |
| Patent number | 509773 |
| Inventors | |
| Inventor country | DE |
| Applicant person | |
| Applicant firm | Ballonhüllen Gesellschaft m.b.H. mit Beschränkter Haftung |
| Applicant type | COMPANY |
| Applicant is inventor? | |
| Original title | Étoffe à ballon |
| English title | Balloon fabric |
| Tech fields | Balloons, Texture, Fabric, Elasticity, Envelope |
| Filing date | 1920-02-10 |
| Full specification filed date | |
| Application number | |
| Grant date | 1920-08-25 |
| Granted? | Yes |
| Publication date | 1920-11-19 |
| Supplementary to patent | Patent DE-1916-03-04 Ballonhüllen Gesellschaft m.b.H. mit Beschränkter Haftung, Patent DE-1917-09-23 Ballonhüllen Gesellschaft m.b.H. mit Beschränkter Haftung |
| Related to aircraft? | Yes |
| Serial number | |
| Patent agent | Société G. Breton, P. Audy, J. Rousset, A. Vergé |
| Assigned to | |
| National tech categories | FR 6.4 |
| IPCs | IPC B64B1/58 |
| CPCs | CPC B64B1/58 |
| Family year | 1916 |
| First filing? | |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | 3 |
| Number of diagram pages | 0 |
| Number of figures | 0 |
| Number of claims | 5 |
