File:Patent-US-1365463.pdf
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Original file (1,159 × 1,704 pixels, file size: 103 KB, MIME type: application/pdf, 3 pages)
Dettagli
| Inventor |
Arthur O. Dahlberg |
|---|---|
| Assignee |
Arthur O. Dahlberg |
| Country |
US |
| Application N° |
399817 |
| Application Date |
1920-07-29 |
| Patent N° |
1365463 |
| Brevettato |
1921-01-11 |
| Priorità |
1920-07-29 |
| Brand | |
| Title |
Fountain-pen indicator |
| Description |
Visualizzatore livello inchiostro |
Riferimenti esterni
Informazioni
Brevetto per un sistema di visualizzazione del livello di inchiostro. Attribuito in forma dubitativa alla Parker per cui l'inventore ha lavorato ed ha assegnato direttamente vari brevetti.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:36, 4 July 2012 |  | 1,159 × 1,704, 3 pages (103 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Arthur O. Dahlberg |Assignee=Arthur O. Dahlberg |Country=US |ApplicationNum=399817 |ApplicationDate=1920-07-29 |PatentNum=1365463 |PatentDate=1921-01-11 |PriorityDate=1920-07-29 |Titolo=Fountain-pen indicator |Marca=Unbranded |De... |
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