File:Patent-US-1920409.pdf
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Original file (1,159 × 1,704 pixels, file size: 163 KB, MIME type: application/pdf, 3 pages)
Dettagli
| Inventor |
William H. Lindemon, Mark G. Lammers |
|---|---|
| Assignee |
W. A. Sheaffer Pen Company |
| Country |
US |
| Application N° |
517899 |
| Application Date |
1931-02-24 |
| Patent N° |
1920409 |
| Brevettato |
1933-08-01 |
| Priorità |
1931-02-24 |
| Brand | |
| Title |
Swaged tip for mechanical pencils |
| Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:15, 14 July 2012 |  | 1,159 × 1,704, 3 pages (163 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=William H. Lindemon, Mark G. Lammers |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=517899 |ApplicationDate=1931-02-24 |PatentNum=1920409 |PatentDate=1933-08-01 |PriorityDate=1931-02-24 |Titolo=Swaged tip for me... |
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