File:Patent-US-979606.pdf

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Brevetto per la costruzione di una penna a stilo.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	02:06, 7 April 2021		1,159 × 1,704, 2 pages (80 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Jacob Ullrich \|Assignee=Jacob Ullrich \|Country=US \|ApplicationNum=585780 \|ApplicationDate=1910-10-07 \|PatentNum=979606 \|PatentDate=1910-12-27 \|PriorityDate=1910-10-07 \|Titolo=Stylographic pen \|Marca=Unbranded \|Descrizione=[[Penna...

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