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{{PatentInfo |Inventor=Frederick R. Wittnebert, Clemens Sonntag |Assignee=The Parker Pen Company |Country=US |ApplicationNum=823484 |ApplicationDate=1959-06-29 |PatentNum=3087464 |PatentDate=1963-04-30 |PriorityDate=1959-06-29 |Titolo=Modular fountain ...
{{PatentInfo
|Inventor=Frederick R. Wittnebert, Clemens Sonntag
|Assignee=The Parker Pen Company
|Country=US
|ApplicationNum=823484
|ApplicationDate=1959-06-29
|PatentNum=3087464
|PatentDate=1963-04-30
|PriorityDate=1959-06-29
|Titolo=Modular fountain pen
|Marca=Parker
|Descrizione=Struttura [[Parker VP]]
}}
==Informazioni==
Brevetto per la struttura della [[Parker VP]]. Riferimenti a {{MentionPatent|US|1918239}}, {{MentionPatent|US|2035378}} e {{MentionPatent|US|2784699}}.
|Inventor=Frederick R. Wittnebert, Clemens Sonntag
|Assignee=The Parker Pen Company
|Country=US
|ApplicationNum=823484
|ApplicationDate=1959-06-29
|PatentNum=3087464
|PatentDate=1963-04-30
|PriorityDate=1959-06-29
|Titolo=Modular fountain pen
|Marca=Parker
|Descrizione=Struttura [[Parker VP]]
}}
==Informazioni==
Brevetto per la struttura della [[Parker VP]]. Riferimenti a {{MentionPatent|US|1918239}}, {{MentionPatent|US|2035378}} e {{MentionPatent|US|2784699}}.