File:Patent-US-1905920.pdf
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Original file (1,159 × 1,704 pixels, file size: 193 KB, MIME type: application/pdf, 4 pages)
Dettagli
| Inventor |
William H. Lindemon |
|---|---|
| Assignee |
W. A. Sheaffer Pen Company |
| Country |
US |
| Application N° |
515898 |
| Application Date |
1931-02-24 |
| Patent N° |
1905920 |
| Brevettato |
1933-04-25 |
| Priorità |
1931-02-24 |
| Brand | |
| Title |
Mechanical pencil |
| Description |
Matita per combo |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica corta per l'uso in una penna combinata matita/stilografica.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:34, 14 July 2012 |  | 1,159 × 1,704, 4 pages (193 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=William H. Lindemon |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=515898 |ApplicationDate=1931-02-24 |PatentNum=1905920 |PatentDate=1933-04-25 |PriorityDate=1931-02-24 |Titolo=Mechanical pencil |Marca=Sheaffer ... |
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