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{{PatentInfo |Inventor=Cyril George Barker |Assignee=The Wyvern Fountain Pen Co. |Country=GB |ApplicationNum=28909/47 |ApplicationDate=1947-10-29 |PatentNum=639958 |PatentDate=1950-07-12 |PriorityDate=1947-10-29 |Titolo=Improvements in fountain pens,...
{{PatentInfo
|Inventor=Cyril George Barker
|Assignee=The Wyvern Fountain Pen Co.
|Country=GB
|ApplicationNum=28909/47
|ApplicationDate=1947-10-29
|PatentNum=639958
|PatentDate=1950-07-12
|PriorityDate=1947-10-29
|Titolo=Improvements in fountain pens, propelling pencils and the like
|Marca=Wyvern
|Descrizione=Decorazione corpo e cappuccio
}}
==Informazioni==
Brevetto per la decorazione in pelle protetta con [[celluloide]].