Clarence Mortimer Godfrey, 83, a technical writer for Rixon Inc., a Maryland electronics firm, and a longtime area resident, died of cancer Tuesday at his home in Silver Spring.

Mr. Godfrey was born in Middletown, N.Y., and moved to Washington at an early age. He attended McKinley High School and was a 1921 graduate of George Washington University.

In 1922, he began working for the Chesapeake & Potomac Telephone Company and later was promoted to a plant supervisor.He remained with the company until 1962.

Mr. Godfrey then joined Rixon Inc. as a technical writer and remained there until his death.

He was a Mason and a member of Mount Pleasant Lodge No. 33.

Mr. Godfrey's marriage to Ruth Godfrey ended in divorce. His second wife, and the mother of their six children, Virginia Mamie Godfrey, died in 1974. In 1978, he remarried his first wife.

In addition to his wife, survivors include four sons, Barry L., of Silver Spring, David, of Hyattsville, Bruce M., of Winona, Minn., and Neil G., of Washington; two daughters, Mamie V., of Silver Spring, and Carol, of Beltsville, and five grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to Sligo Baptist Church, 1610 Dennis Ave., Silver Spring.