File:Patent-FR-1002930.pdf

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Brevetto per una matita meccanica piatta a due mine. Stessa invenzione di nº GB-634823. Stessa invenzione di nº CH-264326.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:57, 28 November 2013		1,295 × 1,752, 4 pages (255 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Assignee=JIF Société Anonyme \|Country=FR \|ApplicationNum=1002930 \|ApplicationDate=1946-11-04 \|PatentNum=1002930 \|PatentDate=1952-03-12 \|PriorityDate=1946-11-04 \|Titolo=Instrument graphique \|Marca=JiF \|Descrizione=Matita meccanica doppia...

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