File:Patent-FR-526035.pdf
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Dettagli
| Inventor |
William P. De Witt |
|---|---|
| Assignee |
William Price De Witt |
| Country |
FR |
| Application N° |
526035 |
| Application Date |
1920-10-14 |
| Patent N° |
526035 |
| Brevettato |
1921-09-30 |
| Priorità |
1920-04-19 |
| Brand | |
| Title |
Porte-mine |
| Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica. Stessa invenzione di nº US-1472962. Stessa invenzione di nº GB-171154. Stessa invenzione di nº DE-349147. Priorità dal brevetto statunitense.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:50, 18 March 2014 |  | 1,295 × 1,752, 6 pages (430 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=William P. De Witt |Assignee=William Price De Witt |Country=FR |ApplicationNum=526035 |ApplicationDate=1920-10-14 |PatentNum=526035 |PatentDate=1921-09-30 |PriorityDate=1920-04-19 |Titolo=Porte-mine |Marca=De Witt-La France |Desc... |
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