Karl Rathgen was born in 1856.
Karl Rathgen died in 1921.
Friedrich Rathgen was born in 1862.
Friedrich Rathgen died in 1942.
F. Rathgen has written: 'The preservation of antiquities'
Rathgen Research Laboratory was created on 1888-04-01.
Friedrich Rathgen has written: 'Verwitterung und Erhaltung von Werksteinen' -- subject(s): Building stones, Testing
Karl Benjamin was born in 1925.
Frederick Karl was born in 1927.
Karl Toman was born in 1884.
Karl Martin was born in 1851.
Karl Lunde was born in 1892.
Karl Altmann was born in 1802.