The roots of Lenkurt Electric Company can be traced as early as 1935 when its predecessor started the development and manufacture of electronic equipment.[2] The company adopted its name in 1933[2] and was taken from its founders Lennart Erickson and Kurt Appert.[1] By this time, it focused on the development and manufacture of carrier current communications equipment.[2] In the first year they were based in San Francisco with 10 employees, but this grew to around 75 by 1947 when they moved to San Carlos, California.[3] The company published a monthly monograph for customers titled Lenkurt Demodulator that served as both educational and promotional material.
In 1959 the company merged with General Telephone and Electronics Company.[3]
Kurt Appert collaborated with Arthur Norberg in an oral history project. He published Electrical Engineering and the Lenkurt Electric Company: Oral History Transcript in 1974. Appert provided his own biographical information.