G. H. Leland, Inc.
139 Webster St., Dayton, OH (1946)

Brand: Ledex

Ledex, Inc.
123 Webster St., Dayton 2, OH (1963)

Ledex is a manufacturer of motorized solenoids, electric switches, and other electrical products.

In the 1960s they also produced silicon and selenium rectifiers.

George Harold Leland founded the G.H. Leland, Inc. some time around 1945. The trade name Ledex was applied for on 1 Dec. 1947 and registered 14 Dec. 1948, with a date of first use of 11 Oct 1945.[3]

The company renamed to Ledex, Inc. in 1960.

Leland also founded The Leland Electric Co. in 1921, a company that made electric motors. It was acquired by the American Machine and Foundry Co. on Feb 13, 1952.[1] Another company was the G.H. Leland Development Engineering Co., active between 1941 and 1947. It was still listed as a member of the American Institute of Electrical Engineers in 1957.[2]

G.H. Leland died in 1969 at the age of 81.

[1] Mergers and Superconcentration: Acquisitions of 500 Largest ... Firms, 1962
[2] Membership Directory, American Institute of Electrical Engineers, 1957
[3] USPTO trademark #71542853