File:Patent-US-1463803.pdf
Jump to navigation
Jump to search
 Size of this JPG preview of this PDF file: 408 × 600 pixels. Other resolution: 163 × 240 pixels. |
Original file (1,159 × 1,704 pixels, file size: 180 KB, MIME type: application/pdf, 3 pages)
Dettagli
| Inventor |
William P. De Witt |
|---|---|
| Assignee |
William P. De Witt |
| Country |
US |
| Application N° |
568469 |
| Application Date |
1922-06-15 |
| Patent N° |
1463803 |
| Brevettato |
1923-08-07 |
| Priorità |
1922-06-15 |
| Brand | |
| Title |
Pencil with adjustable lead |
| Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:49, 25 June 2012 |  | 1,159 × 1,704, 3 pages (180 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=William P. De Witt |Assignee=William P. De Witt |Country=US |ApplicationNum=568469 |ApplicationDate=1922-06-15 |PatentNum=1463803 |PatentDate=1923-08-07 |PriorityDate=1922-06-15 |Titolo=Pencil with adjustable lead |Marca=De Witt... |
You cannot overwrite this file.
File usage
There are no pages that use this file.