File:Patent-US-2314551.pdf
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Dettagli
| Inventor |
Wilbur K. Olson |
|---|---|
| Assignee |
W. A. Sheaffer Pen Company |
| Country |
US |
| Application N° |
398185 |
| Application Date |
1941-06-16 |
| Patent N° |
2314551 |
| Brevettato |
1943-03-23 |
| Priorità |
1941-06-16 |
| Brand | |
| Title |
Fountain pen |
| Description |
Cappuccio e controcappuccio |
Riferimenti esterni
Informazioni
Brevetto la costruzione di cappuccio dotato di un controcappuccio con una valvola per permettere la equalizzazione della pressione atmosferica.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:57, 15 July 2012 |  | 1,159 × 1,704, 4 pages (175 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Wilbur K. Olson |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=398185 |ApplicationDate=1941-06-16 |PatentNum=2314551 |PatentDate=1943-03-23 |PriorityDate=1941-06-16 |Titolo=Fountain pen |Marca=Sheaffer |Descrizi... |
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