File:Patent-DE-349147.pdf
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Dettagli
| Inventor |
William P. De Witt |
|---|---|
| Assignee |
William Price De Witt |
| Country |
DE |
| Application N° |
349147 |
| Application Date |
1920-10-10 |
| Patent N° |
349147 |
| Brevettato |
1922-02-25 |
| Priorità |
1920-04-19 |
| Brand | |
| Title |
Schreibstift mit verschiebbarem Minentraeger |
| 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 FR-526035. Priorità dal brevetto statunitense.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:30, 18 March 2014 |  | 1,295 × 1,752, 5 pages (404 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=William P. De Witt |Assignee=William Price De Witt |Country=DE |ApplicationNum=349147 |ApplicationDate=1920-10-10 |PatentNum=349147 |PatentDate=1922-02-25 |PriorityDate=1920-04-19 |Titolo=Schreibstift mit verschiebbarem Minentrae... |
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