Photo: The photographer of the photo is unknown - the photographer of the profile photos is not mentioned in the book "Finlandssvenska Tekniker III" published in 1925 in Helsinki, Finland. The book's author Jonatan Reuter died in 1947. The book and content is thereby considered public domain in both Finlan, CC0, via Wikimedia Commons⁹

Rudolf Kolster

Finnish engineer.¹

Born Mar 13, 1837, died Oct 28, 1901.¹

Companies

Kolster Oy AbFounder⁸

Career

Occupation: engineer, university teacher.⁴

Date not recordedWorked at Helsinki University of Technology²
Date not recordedFounded Kolster Oy Ab³

Personal life

BornMar 13, 1837, Hamburg⁵
DiedOct 28, 1901, Helsinki⁶
CitizenshipGrand Duchy of Finland⁷

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataRudolf Kolster on Wikidata
2
WikidataRudolf Kolster: Worked at Helsinki University of Technology, on Wikidata
3
WikidataRudolf Kolster: Founded Kolster Oy Ab, on Wikidata
4
WikidataRudolf Kolster: occupation, on Wikidata
5
WikidataRudolf Kolster: place of birth, on Wikidata
6
WikidataRudolf Kolster: place of death, on Wikidata
7
WikidataRudolf Kolster: citizenship, on Wikidata
8
WikidataKolster Oy Ab, Founder
9
Wikimedia CommonsRudolf Kolster photo by The photographer of the photo is unknown - the photographer of the profile photos is not mentioned in the book "Finlandssvenska Tekniker III" published in 1925 in Helsinki, Finland. The book's author Jonatan Reuter died in 1947. The book and content is thereby considered public domain in both Finlan, CC0