File:Patent-US-RE19530.pdf

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Brevetto per la versione di caricamento a siringa rovesciata denominata dall'azienda Vacuum-Fil. Riemissione del brevetto US-1983682.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	22:44, 5 March 2013		1,159 × 1,704, 5 pages (314 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Walter A. Sheaffer \|Assignee=W. A. Sheaffer Pen Company \|Country=US \|ApplicationNum=2976 \|ApplicationDate=1935-01-22 \|PatentNum=RE19530 \|PatentDate=1935-04-09 \|PriorityDate=1935-01-22 \|Titolo=Fountain pen \|Marca=Sheaffer \|Descriz...

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