Anders Olsen Jordahl (April 4, 1878 – February 18, 1969) was a Norwegian-American engineer, inventor, entrepreneur and artist.
In the first years of the new century, Jordahl met the young Swedish civil engineer Ivar Kreuger in the United States.
In 1907, Ivar Kreuger acquired the European marketing rights for Kahneisen, a system for reinforced concrete construction invented by Julius Kahn during 1903.
[1][2][3][4] Through this company, Jordahl developed and patented an anchor channel for reinforced concrete buildings.
He designed a C-shaped profile in 1913 which was moulded into walls and used as reinforcement and connection device at the same time.