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{{PatentInfo |Inventor=Frederick George Heard |Assignee=Mabie, Todd & Company Limited |Country=GB |ApplicationNum=15067/47 |ApplicationDate=1947-06-07 |PatentNum=635144 |PatentDate=1950-04-05 |PriorityDate=1947-06-07 |Titolo=Improvements in or relating...
{{PatentInfo
|Inventor=Frederick George Heard
|Assignee=Mabie, Todd & Company Limited
|Country=GB
|ApplicationNum=15067/47
|ApplicationDate=1947-06-07
|PatentNum=635144
|PatentDate=1950-04-05
|PriorityDate=1947-06-07
|Titolo=Improvements in or relating to fountain pens
|Marca=Swan
|Descrizione=Penna a sfera
}}
==Informazioni==
Brevetto per una penna a sfera
|Inventor=Frederick George Heard
|Assignee=Mabie, Todd & Company Limited
|Country=GB
|ApplicationNum=15067/47
|ApplicationDate=1947-06-07
|PatentNum=635144
|PatentDate=1950-04-05
|PriorityDate=1947-06-07
|Titolo=Improvements in or relating to fountain pens
|Marca=Swan
|Descrizione=Penna a sfera
}}
==Informazioni==
Brevetto per una penna a sfera