File:Patent-BE-513137.pdf

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Brevetto per un caricamento a capillarità usato dalla Platignum (almeno a quanto risulta da questo foglietto di istruzioni, dove viene citato quello inglese). Priorità dal brevetto francese. Stessa invenzione di nº FR-1040173. Stessa invenzione di nº GB-732463. Stessa invenzione di nº CH-305143.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:11, 22 November 2021		1,296 × 1,754, 7 pages (538 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Guy Frédéric Ringonaud \|Assignee=Guy Frédéric Ringonaud \|Country=BE \|ApplicationNum=513137 \|ApplicationDate=1952-07-26 \|PatentNum=513137 \|PatentDate=1953-01-26 \|PriorityDate=1951-07-27 \|Titolo=Stylographe \|Marca=Platignum \|De...

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