File:Patent-US-1554604.pdf
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Original file (1,159 × 1,704 pixels, file size: 372 KB, MIME type: application/pdf, 5 pages)
Dettagli
| Inventor |
Walter A. Sheaffer |
|---|---|
| Assignee |
Walter A. Sheaffer |
| Country |
US |
| Application N° |
294929 |
| Application Date |
1919-05-05 |
| Patent N° |
1554604 |
| Brevettato |
1925-09-22 |
| Priorità |
1919-05-05 |
| Brand | |
| Title |
Pencil |
| Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:41, 14 July 2012 |  | 1,159 × 1,704, 5 pages (372 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Walter A. Sheaffer |Assignee=Walter A. Sheaffer |Country=US |ApplicationNum=294929 |ApplicationDate=1925-09-22 |PatentNum=1554604 |PatentDate=1925-09-22 |PriorityDate=1919-05-05 |Titolo=Pencil |Marca=Sheaffer |Descrizione=Matita ... |
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