File:Patent-US-1807227.pdf

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Brevetto per le bocchette di uno stiloforo. Usato della Parker e dalla Eversharp, appare sul foglietto sottostante di stilofori di queste aziende.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	22:06, 25 October 2013		1,159 × 1,704, 3 pages (130 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Craig R. Sheaffer \|Assignee=Pen Desk Set Company \|Country=US \|ApplicationNum=87732 \|ApplicationDate=1926-02-12 \|PatentNum=1807227 \|PatentDate=1931-05-26 \|PriorityDate=1926-02-12 \|Titolo=Fountain-pen desk stand \|Marca=Pen Desk Set...

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