File:Patent-US-2078433.pdf
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Dettagli
Inventor |
Arthur Winter |
---|---|
Assignee |
Arthur Winter |
Country |
US |
Application N° |
54978 |
Application Date |
1935-12-18 |
Patent N° |
2078433 |
Brevettato |
1937-04-27 |
Priorità |
1935-12-18 |
Brand | |
Title |
Lead feeding pencil |
Description |
Matita meccanica |
Riferimenti esterni
Informazioni
Brevetto per una matita meccanica. Riferimenti a n° US-2028855.
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current | 00:00, 8 June 2021 | ![]() | 1,159 × 1,704, 4 pages (296 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Arthur Winter |Assignee=Arthur Winter |Country=US |ApplicationNum=54978 |ApplicationDate=1935-12-18 |PatentNum=2078433 |PatentDate=1937-04-27 |PriorityDate=1935-12-18 |Titolo=Lead feeding pencil |Marca=Dictator |Descrizione=Mati... |
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