Lauritz Peter Knudsen
Colbjørnsensgade 14, København (1893)
Vesterbrogade 41-43, København (1895)
Gammel Kongevej 3, København (1910)

Laur. Knudsen Mekanisk Etablissement A/S
Haraldsgade 43, København (1926)
Haraldsgade 53, København (1948)

Knudsen started as a clockmaker and developed to a radio producer in the early 1920s.

After the radio production was ended mid-1930s, the company made household appliances and electrical installation material, the latter business still being active under the Schneider umbrella as of 2021.

Established in 1893 by Lauritz Peter Knudsen (born 12th Nov. 1863 in Odense, died 18th Feb. 1917) as a watch and clockmaker's shop.

After his death in 1917, the installation business was sold while the factory was continued under the name Laur. Knudsen A/S.

In 1919 a new factory was built in Haraldsgade, the entire company relocating to the new premises in 1921.

In 1950 they employed around 2400 workers and officials.

The company merged with Danish rival NES to form LK-NES in 1968. The "NES" was later dropped from the name.

in 1990 they were taken over by the Danish NKT group.

LK merged with the Finnish Ahlstrom Group's electrical equipment division in 1995 forming Lexel A/S. Lexel joined the French Schneider Electric in 1999, first as independent group, then in 2003 becoming a Schneider subsidiary.

The company changed its name from LK A/S to Lauritz Knudsen A/S in 2004. A year later they merged with the Danish subsidiary Schneider Electric Denmark A/S.

The two companies are merged into a single company in 2007, in 2009 the branding is changed to Lauritz Knudsen by Schneider Electric.