File:Patent-US-1905920.pdf
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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 | |
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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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