File:Patent-US-2218536.pdf

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Inventor	Henry C. Klagges
Assignee	The Esterbrook Steel Pen Manfacturing Co.
Country	US
Application N°	250585
Application Date	1939-01-12
Patent N°	2218536
Brevettato	1940-10-22
Priorità	1939-01-12
Brand	Esterbrook
Title	Fountain pen
Description	Caricamento a sfiatatoio

Brevetto per una variante di caricamento a sfiatatoio manovrato da un pulsante trasparente di pompaggio.

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current	22:05, 7 April 2020		1,159 × 1,704, 7 pages (429 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Henry C. Klagges \|Assignee=The Esterbrook Steel Pen Manfacturing Co. \|Country=US \|ApplicationNum=250585 \|ApplicationDate=1939-01-12 \|PatentNum=2218536 \|PatentDate=1940-10-22 \|PriorityDate=1939-01-12 \|Titolo=Fountain pen \|Marca=Es...

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