File:Patent-US-978419.pdf

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Original file(1,159 × 1,704 pixels, file size: 340 KB, MIME type: application/pdf, 5 pages)
Inventor

Paul E. Wirt

Assignee

Paul E. Wirt

Country

US

Application N°

460493

Application Date

1908-10-31

Patent N°

978419

Brevettato

1910-12-13

Priorità

1908-10-31

Brand

Wirt

Title

Fountain-pen

Description

Cappuccio di sicurezza

Riferimenti esterni

Informazioni

Brevetto per un cappuccio di sicurezza che blocca l'afflusso di inchiostro al pennino in una penna con un sistema di caricamento a contagocce con valvola sotto il pennino per l'accesso al riempimento. Stessa invenzione di nº FR-395110.

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current19:20, 23 July 2012Thumbnail for version as of 19:20, 23 July 20121,159 × 1,704, 5 pages (340 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Paul E. Wirt |Assignee=Paul E. Wirt |Country=US |ApplicationNum=460493 |ApplicationDate=1908-10-31 |PatentNum=978419 |PatentDate=1910-12-13 |PriorityDate=1908-10-31 |Titolo=Fountain-pen |Marca=Wirt |Descrizione=Cappuccio di sicur...
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