Roderic Peters, 90, a Washington businessman since the early 1920s, died of cancer Saturday in his Washington home.

Mr. Peters came to Washington in the early 1920s to join Servel Inc., a company that manufactuered gas refrigerators. He retired as regional sales manager after about 30 years with the company.

Following his retirement from Servel, he operated his own heating and appliance supply firms in Washington.

In 1973, he helped found Bright Light Wholesalers, a Washington and Alexandria firm that sold gas lights and outdoor cooking and heating supplies. He remained active in the businness until shortly before his death.

Mr. Peters was born in Troy, N.Y. He lived in New Jersey, where he worked as a sales assistant to Thomas Alva Edison for about five years before coming to Washington.

He served in the Army during World War I.

He was a founder and first president of the Sales Executive and Marketing Club of Washington. He was a member of the Army and Navy Club and Manor Country Club.

His wife, the former Florence Townsend, died about three years ago.

Survivors include a sister, Ruth P. Engstrom, of Coral Gables, Fla.

The family suggests that expressions of sympathy be in the form of contributions to the American Cancer Society.