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{{PatentInfo |Inventor=Aladdin Industries Limited |Assignee=Aladdin Industries Limited |Country=NL |ApplicationNum=31287 |ApplicationDate=1925-09-16 |PatentNum=19802 |PatentDate=1929-09-16 |PriorityDate=1925-01-30 |Titolo=Vulpotlood met centrale stifto...