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{{PatentInfo |Inventor=Leslie William Johnson, Edward Stephen Sears |Assignee=Mabie, Todd & Company Limited |Country=GB |ApplicationNum=33676/46 |ApplicationDate=1946-11-13 |PatentNum=621822 |PatentDate=1949-04-20 |PriorityDate=1946-11-13 |Titolo=Impro...
{{PatentInfo
|Inventor=Leslie William Johnson, Edward Stephen Sears
|Assignee=Mabie, Todd & Company Limited
|Country=GB
|ApplicationNum=33676/46
|ApplicationDate=1946-11-13
|PatentNum=621822
|PatentDate=1949-04-20
|PriorityDate=1946-11-13
|Titolo=Improvements in or relating to fountain pens
|Marca=Swan
|Descrizione=Penna a sfera
}}
==Informazioni==
Brevetto per una penna a sfera

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