File:Patent-US-2216780.pdf

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Inventor	Henry C. Klagges
Assignee	The Esterbrook Steel Pen Manufacturing Co.
Country	US
Application N°	175337
Application Date	1937-11-18
Patent N°	2216780
Brevettato	1940-10-08
Priorità	1937-11-18
Brand	Esterbrook
Title	Mechanical pencil
Description	Matita meccanica

Brevetto per una matita meccanica.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:21, 25 December 2020		1,159 × 1,704, 9 pages (602 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Henry C. Klagges \|Assignee=The Estrerbrook Steel Pen Manufacturing Co. \|Country=US \|ApplicationNum=175337 \|ApplicationDate=1937-11-18 \|PatentNum=2216780 \|PatentDate=1940-10-08 \|PriorityDate=1937-11-18 \|Titolo= Mechanical pencil...

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