File:Patent-US-2072711.pdf
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Dettagli
| Inventor |
William R. Cuthbert, William H. Lindemon |
|---|---|
| Assignee |
W. A. Sheaffer Pen Company |
| Country |
US |
| Application N° |
38672 |
| Application Date |
1935-08-31 |
| Patent N° |
2072711 |
| Brevettato |
1937-03-02 |
| Priorità |
1935-08-31 |
| Brand | |
| Title |
Mechanical pencil |
| Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:26, 14 July 2012 |  | 1,159 × 1,704, 4 pages (226 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=William R. Cuthbert, William H. Lindemon |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=38672 |ApplicationDate=1935-08-31 |PatentNum=2072711 |PatentDate=1937-03-02 |PriorityDate=1935-08-31 |Titolo=Mechanical pen... |
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