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{{PatentInfo |Inventor=Eduard Penkala |Assignee=Eduard Penkala |Country=GB |ApplicationNum=190603690 |ApplicationDate=1906-02-14 |PatentNum=190603690 |PatentDate=1906-04-26 |PriorityDate=1906-02-14 |Titolo=Improvements in Pencil Cases |Marca=Penkala |D...
{{PatentInfo
|Inventor=Eduard Penkala
|Assignee=Eduard Penkala
|Country=GB
|ApplicationNum=190603690
|ApplicationDate=1906-02-14
|PatentNum=190603690
|PatentDate=1906-04-26
|PriorityDate=1906-02-14
|Titolo=Improvements in Pencil Cases
|Marca=Penkala
|Descrizione=Porta-mine
}}
==Informazioni==
Brevetto di un porta mine. {{SamePatent|DE|176702}} {{SamePatent|FR|363394}}

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