File:Patent-US-1472962.pdf
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Dettagli
| Inventor |
William P. De Witt |
|---|---|
| Assignee |
De Witt - La France Co. |
| Country |
US |
| Application N° |
374848 |
| Application Date |
1920-04-19 |
| Patent N° |
1472962 |
| Brevettato |
1923-11-06 |
| Priorità |
1920-04-19 |
| Brand | |
| Title |
Pencil |
| Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica. Stessa invenzione di nº FR-526035. Stessa invenzione di nº GB-171154. Stessa invenzione di nº DE-349147.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:19, 24 June 2012 |  | 1,159 × 1,704, 6 pages (521 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=William P. De Witt |Assignee=De Witt - La France Co. |Country=US |ApplicationNum=374848 |ApplicationDate=1920-04-19 |PatentNum=1472962 |PatentDate=1923-11-06 |PriorityDate=1920-04-19 |Titolo=Pencil |Marca=De Witt-La France |Descr... |
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