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{{PatentInfo |Inventor=Donald Ladd |Assignee=The Dictator Fountain Pen Company Inc. |Country=DE |ApplicationNum=D41454 |ApplicationDate=1922-03-23 |PatentNum=369345 |PatentDate=1923-02-17 |PriorityDate=1921-04-23 |Titolo=Magazinschreibstift |Marca=Dict...
{{PatentInfo
|Inventor=Donald Ladd
|Assignee=The Dictator Fountain Pen Company Inc.
|Country=DE
|ApplicationNum=D41454
|ApplicationDate=1922-03-23
|PatentNum=369345
|PatentDate=1923-02-17
|PriorityDate=1921-04-23
|Titolo=Magazinschreibstift
|Marca=Dictator
|Descrizione=Matita meccanica
}}
==Informazioni==
Brevetto per una matita meccanica. Priorità dal brevetto americano. {{SamePatent|CH|102306}} {{SamePatent|FR|549123}} {{SamePatent|AT|94205}} {{SamePatent|GB|179145}}

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