File:Patent-US-2405381.pdf

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Inventor	Gerardo Hendrik va Spankeren
Assignee	Eterpen Sociedad Anonima Financiera
Country	US
Application N°	508977
Application Date	1943-11-04
Patent N°	2405381
Brevettato	1946-08-06
Priorità	1943-04-26
Brand	Eterpen
Title	Writing instrument
Description	Caricamento per sfera

Brevetto per un sistema di caricamento di inchiostro per una penna a sfera. Priorità dal brevetto argentino.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	01:45, 22 December 2020		1,159 × 1,704, 3 pages (193 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Gerardo Hendrik va Spankeren \|Assignee=Eterpen Sociedad Anonima Financiera \|Country=US \|ApplicationNum=508977 \|ApplicationDate=1943-11-04 \|PatentNum=2405381 \|PatentDate=1946-08-06 \|PriorityDate=1943-04-26 \|Titolo=Writing instrume...

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