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{{PatentInfo |Inventor=John C. Wahl |Assignee=The Wahl Company |Country=US |ApplicationNum=286964 |ApplicationDate=1919-04-02 |PatentNum=1395316 |PatentDate=1921-11-01 |PriorityDate=1919-04-02 |Titolo=Chasing-machine |Marca=Eversharp |Descrizione=Macch...