File:Patent-GB-424069.pdf

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Inventor	James Jeff
Assignee	Conway Stewart & Co., James Jeff
Country	GB
Application N°	25761/33
Application Date	1933-09-18
Patent N°	424069
Brevettato	1935-02-14
Priorità	1933-09-18
Brand	Conway Stewart
Title	Improvements in or relating to mechanically operated lead pencils
Description	Matita meccanica

Brevetto per una matita meccanica.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:52, 27 October 2013		1,295 × 1,752, 6 pages (565 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=James Jeff \|Assignee=Conway Stewart & Co., James Jeff \|Country=GB \|ApplicationNum=25761/33 \|ApplicationDate=1933-09-18 \|PatentNum=424069 \|PatentDate=1935-02-14 \|PriorityDate=1933-09-18 \|Titolo=Improvements in or relating to mecha...

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