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{{PatentInfo |Inventor=Leon H. Ashmore |Assignee=The Esterbrook Steel Pen Manfacturing Co. |Country=US |ApplicationNum=228943 |ApplicationDate=1931-12-24 |PatentNum=1918239 |PatentDate=1933-07-18 |PriorityDate=1931-12-24 |Titolo=Fountain pen |Marca=Est...
{{PatentInfo
|Inventor=Leon H. Ashmore
|Assignee=The Esterbrook Steel Pen Manfacturing Co.
|Country=US
|ApplicationNum=228943
|ApplicationDate=1931-12-24
|PatentNum=1918239
|PatentDate=1933-07-18
|PriorityDate=1931-12-24
|Titolo=Fountain pen
|Marca=Esterbrook
|Descrizione=Pennino intercambiabile
}}
==Informazioni==
Brevetto per un pennino intercambiabile.

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