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Patent examiners
1910 deaths
1866 births
19th-century Norwegian civil servants
19th-century Norwegian inventors
20th-century Norwegian civil servants
20th-century Norwegian inventors
People from Aurskog-Høland

Johan Vaaler: page information

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Page ID192709

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CreatedJun 17, 2026, 6:23 AM

UpdatedJun 18, 2026, 8:04 AM