File:Patent-US-2107162.pdf
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Original file (1,159 × 1,704 pixels, file size: 244 KB, MIME type: application/pdf, 4 pages)
Dettagli
| Inventor |
Henry H. Polk Jr. |
|---|---|
| Assignee |
W. A. Sheaffer Pen Company |
| Country |
US |
| Application N° |
41458 |
| Application Date |
1935-09-21 |
| Patent N° |
2107162 |
| Brevettato |
1938-02-01 |
| Priorità |
1935-09-21 |
| Brand | |
| Title |
Fountain pen |
| Description |
Riferimenti esterni
Informazioni
Brevetto per un alimentatore in grado di compensare gli sbalzi di pressione ed evitare perdite di inchiostro anche in caso di serbatoi molto grandi (viene fatta esplicita menzione per caricamenti senza sacchetto, sembra pertanto collegato all'uso di un caricamento come il Vacuum-Fil).
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:48, 14 July 2012 |  | 1,159 × 1,704, 4 pages (244 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Henry H. Polk Jr. |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=41458 |ApplicationDate=1935-09-21 |PatentNum=2107162 |PatentDate=1938-02-01 |PriorityDate=1935-09-21 |Titolo=Fountain pen |Marca=Sheaffer |Descriz... |
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