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{{PatentInfo |Inventor=Robert E. Freidlein, David Juelss |Assignee=American Lead Pencil Company |Country=US |ApplicationNum=53692 |ApplicationDate=1935-12-10 |PatentNum=2110551 |PatentDate=1938-03-08 |PriorityDate=1935-12-10 |Titolo=Mechanical pencil |...
{{PatentInfo
|Inventor=Robert E. Freidlein, David Juelss
|Assignee=American Lead Pencil Company
|Country=US
|ApplicationNum=53692
|ApplicationDate=1935-12-10
|PatentNum=2110551
|PatentDate=1938-03-08
|PriorityDate=1935-12-10
|Titolo=Mechanical pencil
|Marca=Venus
|Descrizione=Matita meccanica
}}
==Informazioni==
Brevetto per una matita meccanica.

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