File:Patent-US-1926405.pdf
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Dettagli
| Inventor |
Henry H. Polk Jr. |
|---|---|
| Assignee |
Henry H. Polk Jr. |
| Country |
US |
| Application N° |
551913 |
| Application Date |
1931-07-20 |
| Patent N° |
1926405 |
| Brevettato |
1933-09-12 |
| Priorità |
1931-07-20 |
| Brand | |
| Title |
Fountain pen |
| Description |
Caricamento Vacuum-Fil |
Riferimenti esterni
Informazioni
Brevetto per la variante di caricamento a siringa rovesciata chiamato dall'azienda Vacuum-Fil.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:55, 14 July 2012 |  | 1,159 × 1,704, 3 pages (147 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Henry H. Polk |Assignee=Henry H. Polk |Country=US |ApplicationNum=551913 |ApplicationDate=1931-07-20 |PatentNum=1926405 |PatentDate=1933-09-12 |PriorityDate=1931-07-20 |Titolo=Fountain pen |Marca=Sheaffer |Descrizione=Caricamento... |
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