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1901-1934ISS was founded in 1901 as a night security firm named Kjøbenhavn-Frederiksberg Nattevagt.Download
1934-1945The employees at the firm's inception on 15 March 1934. They were all equipped with the firm's new uniforms and a hat with the swan emblem.Download
1945-1960The machines were improved and refined year by year.Download
1960-1973The sixties brought higher growth rates to the firm - both in Denmark and abroad.Download
1973-1983This photograph shows DDRS cleaning workers at Ringsted Hospital in 1975. In 2005, ISS celebrated its 40th anniversaryat Ringsted Hospital.Download
1983-1993The USA adventure made a clear impressionon ISS throughout the 1980s.Download
1993-2000ISS ESGO carried out pest control at the Temple of Heaven in Beijing.Download
2000-2005The idea behind ISS' new uniforms was that employees should blend in naturally with other people in public spaces.Download