Peter T. Dracopoulos, 97, an examiner-in-chief on the Patent Office's board of appeals from 1957 until his retirement in 1970, died of cardiac arrhythmia Nov. 15 at his home in Chevy Chase.

Born in Greece, Mr. Dracopoulos immigrated with his father to the United States in 1916. He graduated from Emerson Preparatory School in Washington, Yale University in 1927 with a bachelor's degree in mechanical engineering and Georgetown University law school in 1932.

Mr. Dracopoulos began working at the Patent Office in 1927 as a junior patent examiner and held several offices until President Dwight D. Eisenhower appointed him to the board of appeals.

He received the Distinguished Service Award from the Patent Office in 1956.

He was a member of the International Association for the Protection of Industrial Property, American Hellenic Lawyers Society of Washington, Order of the American Hellenic Educational and Progressive Association, Yale Club of Washington and Georgetown University Alumni Association.

He also belonged to St. Sophia Greek Orthodox Cathedral in Washington.

His avocations included refinishing furniture and traveling.

Survivors include his wife of 63 years, Marian the Strenglis Dracopoulos of Chevy Chase; a daughter, Theodora Argue of Mercer Island, Wash.; a brother; and two granddaughters.