File:Patent-US-D281512.pdf

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Riferimenti esterni

Brevetto per la penna a tre pennini con punta triangolare, Trident. Riferimenti a nº US-2260571 e nº US-2601846.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:54, 22 December 2020		1,159 × 1,704, 2 pages (39 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Akio Kobori \|Assignee=The Sailor Pen Co., Ltd. \|Country=US \|ApplicationNum=513228 \|ApplicationDate=1983-07-13 \|PatentNum=D281512 \|PatentDate=1985-11-26 \|PriorityDate=1983-07-13 \|Titolo=Nib for a fountain pen \|Marca=Sailor \|Descr...

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