From the Leister FIX W200 hand vacuum cleaner to micro-optics and from a sole proprietorship to a group
1949
1949 - 59
1950
1954
1959
1960 - 69
1963
1966
1967
1970
1971
1977
1979
1980
1980 - 89
1984 - 89
1992
1993
1997
1998
1999
2000
2004
2007
2008
2009
2011
2012
2013
2014
2016
2018
2019
2020
2022