File:Patent-US-821993.pdf
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Inventor |
Charles Dunn |
---|---|
Assignee |
Charles Dunn |
Country |
US |
Application N° |
267686 |
Application Date |
1905-06-30 |
Patent N° |
821993 |
Brevettato |
1906-05-29 |
Priorità |
1905-06-30 |
Brand | |
Title |
Penholder |
Description |
Gruppo pennino doppio |
Riferimenti esterni
Informazioni
Brevetto per un gruppo pennino doppio, in cui un pennino è verso l'esterno e l'altro nel fusto, possono essere scambiati di posto riavvitandoli.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:40, 24 June 2012 | ![]() | 1,159 × 1,704, 3 pages (90 KB) | Piccardi (talk | contribs) | {{PatentInfo |Inventor=Charles Dunn |Assignee=Charles Dunn |Country=US |ApplicationNum=267686 |ApplicationDate=1905-06-30 |PatentNum=821993 |PatentDate=1906-05-29 |PriorityDate=1905-06-30 |Titolo=Penholder |Marca=Dunn |Descrizione=Alimentatore }} ==Inf... |
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