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{{PatentInfo |Inventor=William B. Reynolds |Assignee=The Parker Pen Company |Country=US |ApplicationNum=650140 |ApplicationDate=1946-02-25 |PatentNum=2417861 |PatentDate=1949-11-29 |PriorityDate=1946-02-25 |Titolo=Stable blue writing ink and a dye ther...
{{PatentInfo
|Inventor=William B. Reynolds
|Assignee=The Parker Pen Company
|Country=US
|ApplicationNum=650140
|ApplicationDate=1946-02-25
|PatentNum=2417861
|PatentDate=1949-11-29
|PriorityDate=1946-02-25
|Titolo=Stable blue writing ink and a dye therefor
|Marca=Parker
|Descrizione=Inchiostro blu stabile
}}
==Informazioni==
Brevetto per un inchiostro blu stabile.

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