File:Patent-US-217888.pdf

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Inventor	Duncan Mackinnon
Assignee	Duncan Mackinnon
Country	US
Application N°	217888
Application Date	1879-03-07
Patent N°	217888
Brevettato	1879-07-29
Priorità	1879-03-07
Brand	MacKinnon
Title	Improvements in stylographic fountain-pens
Description	Penna a stilo

Brevetto per una penna a stilo. Riferimento al precedente nº US-174965. Stampigliato sul corpo delle omonime penne MacKinnon (vedi File:1881-MacKinnon.jpg).

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:25, 26 December 2018		1,159 × 1,704, 3 pages (103 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=Duncan Mackinnon \|Assignee=Duncan Mackinnon \|Country=US \|ApplicationNum=217888 \|ApplicationDate=1879-03-07 \|PatentNum=217888 \|PatentDate=1879-07-29 \|PriorityDate=1879-03-07 \|Titolo=Improvements in stylographic fountain-pens \|Marc...

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