File:Patent-GB-284529.pdf

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Brevetto per una matita meccanica. Stessa invenzione di nº FR-636029.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	23:14, 14 December 2013		1,295 × 1,752, 3 pages (173 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Karl Fend \|Assignee=Karl Fend \|Country=GB \|ApplicationNum=15688/27 \|ApplicationDate=1927-06-13 \|PatentNum=284529 \|PatentDate=1928-02-02 \|PriorityDate=1927-06-13 \|Titolo=Porte-mine \|Marca=Fend \|Descrizione=Matita meccanica }} ==In...

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