EntityQ493139· pop 17· linked from 10 articlesJohan VaalerSign in to saveNorwegian inventor (1866–1910)ConnectionsUnited StatesCountryNorwayCountryUnited KingdomCountrySwedenCountryWorld War IIConceptOsloEntityInternational Standard Book NumberEntityNazismEntityinventionEntityAkershusEntityHaakon VII of NorwayEntityfishing hookEntityGjøvik MunicipalityEntitypaper clipEntityAurskog-Høland MunicipalityEntitySandvikaEntityGerman occupation of NorwayEntityHenry PetroskiEntityNorwegian Patent OfficeEntityO. Mustad & Søn ASCompanyCategories1866 births1910 deaths19th-century Norwegian civil servants19th-century Norwegian inventors20th-century Norwegian civil servants20th-century Norwegian inventorsPatent examinersPeople from Aurskog-Høland