Electrical engineer, Lehigh University, 1922. Bachelor of Laws, George Washington, 1925.
Assistant examiner, United States Patent Office, 1922-1925; associate, Redding, Greeley, O'Shea & Campbell, 1925-1934; partner, Hoguet, Neary & Campbell, New York City, 1934-1946; successor firm Campbell, Brumbaugh, Free & Graves, (now Brumbaugh, Graves, Donohue & Raymond), 1946-1992.
Member of the board finance, Westport, Connecticut, 1947-1948, town meeting representative, 1949-1955. Member American Bar Association, American Patent Law assosiation, New York Patent Law Association (president 1953-1954), Association Bar City New York, Phi Delta Phi, Phi Delta Theta.
Married Sophia Waldman, June 19, 1926. Children: Mary Ann Brumbaugh Hellmuth, Granville Martin, John.