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{{PatentInfo |Inventor=Andreas Bienenstein |Assignee=The Conklin Pen Manufacturing Company |Country=US |ApplicationNum=477695 |ApplicationDate=1930-08-25 |PatentNum=1932765 |PatentDate=1933-10-31 |PriorityDate=1930-08-25 |Titolo=Ink bottle |Marca=Conkl...