1959 - Vice President
1958 - Vice President
1957 - Vice President
1956 - Vice President
1955 - Vice President
1954 - Vice President
1954 - Director
1954 - Chief Engineer
1951 - Vice President
1950 - Vice President
1949 - Vice President
1948 - Vice President
1947 - Vice President
1947 - Director
1945 - Vice President
1939 - Chief Engineer
