File:Patent-GB-732463.pdf

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Brevetto per un caricamento a capillarità usato dalla Platignum (almeno a quanto risulta da questo foglietto di istruzioni). Priorità dal brevetto francese. Stessa invenzione di nº FR-1040173. Stessa invenzione di nº BE-513137. Stessa invenzione di nº CH-305143.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	22:39, 21 November 2021		1,296 × 1,754, 6 pages (427 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Guy Frédéric Ringonaud \|Assignee=Guy Frédéric Ringonaud \|Country=GB \|ApplicationNum=28239/52 \|ApplicationDate=1952-11-10 \|PatentNum=732463 \|PatentDate=1955-06-22 \|PriorityDate=1951-07-27 \|Titolo=Fountain pen \|Marca=Platignum...

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