File:Patent-US-1848283.pdf

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Inventor	Assegnatario
Assignee	Joseph Wallace
Country	US
Application N°	463468
Application Date	1930-06-24
Patent N°	1907626
Brevettato	1932-03-08
Priorità	1930-06-24
Brand	Inkograph
Title	Display apparatus
Description	Apparecchio di visualizzazione

Brevetto per la costruzione di una apparecchio per mostrare il funzionamento di una penna.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:52, 21 March 2021		1,159 × 1,704, 8 pages (617 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Assignee=Joseph Wallace \|Country=US \|ApplicationNum=463468 \|ApplicationDate=1930-06-24 \|PatentNum=1907626 \|PatentDate=1932-03-08 \|PriorityDate=1930-06-24 \|Titolo=Display apparatus \|Marca=Inkograph \|Descrizione=Apparecchio di visualizzazi...

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