File:Patent-US-2504420.pdf
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Dettagli
| Inventor |
Philip C. Hull, George W. Gilman |
|---|---|
| Assignee |
The Parker Pen Company |
| Country |
US |
| Application N° |
739276 |
| Application Date |
1947-03-31 |
| Patent N° |
2504420 |
| Brevettato |
1950-04-18 |
| Priorità |
1947-03-31 |
| Brand | |
| Title |
Magazine pencil with rotary lead propelling means |
| Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica. Riferimenti a nº US-1621990, nº US-1864038 e nº US-2116136.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:02, 6 August 2012 |  | 1,159 × 1,704, 6 pages (463 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Philip C. Hull, George W. Gilman |Assignee=The Parker Pen Company |Country=US |ApplicationNum=739276 |ApplicationDate=1947-03-31 |PatentNum=2504420 |PatentDate=1950-04-18 |PriorityDate=1947-03-31 |Titolo=Magazine pencil with rota... |
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