File:Patent-US-1258458.pdf

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Original file(1,159 × 1,704 pixels, file size: 110 KB, MIME type: application/pdf, 3 pages)
Inventor

Hans P. Ravn

Assignee

Hans P. Ravn

Country

US

Application N°

199005

Application Date

1917-10-29

Patent N°

1258458

Brevettato

1918-03-05

Priorità

1917-10-29

Brand

Welty

Title

Fountain-Pen

Description

Caricamento a levetta

Riferimenti esterni

Informazioni

Brevetto per una variante di caricamento a levetta. Attribuito alla Welty perché l'inventore è cointestatario di un brevetto successivo (nº US-1299642) insieme a William A. Welty molto simile a questo (pare una estensione, anche se non esplicita).

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current23:52, 19 November 2013Thumbnail for version as of 23:52, 19 November 20131,159 × 1,704, 3 pages (110 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Hans P. Ravn |Assignee=Hans P. Ravn |Country=US |ApplicationNum=199005 |ApplicationDate=1917-10-29 |PatentNum=1258458 |PatentDate=1918-03-05 |PriorityDate=1917-10-29 |Titolo=Fountain-Pen |Marca=Welty |Descrizione=[[Caricamento a ...
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