File:Patent-GB-524710.pdf

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Inventor	William F. Johnson
Assignee	The Mentmore Manufacturing Company Limited
Country	GB
Application N°	3712/39
Application Date	1939-02-03
Patent N°	524710
Brevettato	1940-08-13
Priorità	1939-02-03
Brand	Mentmore
Title	Improvements in fountain pens
Description	Pennino intercambiabile

Brevetto per un gruppo pennino intercambiabile.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:44, 30 November 2013		1,295 × 1,752, 4 pages (297 KB)	Piccardi (talk \| contribs)	{{PatentInfo \|Inventor=William F. Johnson \|Assignee=The Mentmore Manufacturing Company Limited \|Country=GB \|ApplicationNum=3712/39 \|ApplicationDate=1939-02-03 \|PatentNum=524710 \|PatentDate=1940-08-13 \|PriorityDate=1939-02-03 \|Titolo=Improvements in fou...

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