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{{PatentInfo |Inventor=Samuel E. Townsend |Assignee=The Esterbrook Pen Company |Country=US |ApplicationNum=733073 |ApplicationDate=1947-03-07 |PatentNum=2430023 |PatentDate=1950-07-04 |PriorityDate=1947-03-07 |Titolo=Writing instrument |Marca=Esterbroo...
{{PatentInfo
|Inventor=Samuel E. Townsend
|Assignee=The Esterbrook Pen Company
|Country=US
|ApplicationNum=733073
|ApplicationDate=1947-03-07
|PatentNum=2430023
|PatentDate=1950-07-04
|PriorityDate=1947-03-07
|Titolo=Writing instrument
|Marca=Esterbrook
|Descrizione=Pennino economico
}}
==Informazioni==
Brevetto per un pennino economico. Riferimenti a {{MentionPatent|US|2292381}}; {{MentionPatent|US|1527971}}, {{MentionPatent|US|2149557}} e {{MentionPatent|US|2430023}}.
|Inventor=Samuel E. Townsend
|Assignee=The Esterbrook Pen Company
|Country=US
|ApplicationNum=733073
|ApplicationDate=1947-03-07
|PatentNum=2430023
|PatentDate=1950-07-04
|PriorityDate=1947-03-07
|Titolo=Writing instrument
|Marca=Esterbrook
|Descrizione=Pennino economico
}}
==Informazioni==
Brevetto per un pennino economico. Riferimenti a {{MentionPatent|US|2292381}}; {{MentionPatent|US|1527971}}, {{MentionPatent|US|2149557}} e {{MentionPatent|US|2430023}}.