A native of Hastings, New York, Fellers worked in research for the United States Department of Agriculture, the National Canners Association (Food Products Association since 2005), and the University of Washington before joining the University of Massachusetts Amherst (known in 1925 as Massachusetts Agricultural College) department of horticulture manufacturing on December 1, 1925.
Fellers as department chair also gave the go ahead to faculty member Gideon E. (Guy) Livingston to form an honor society for food science and technology which would be called Phi Tau Sigma (ΦΤΣ).
Fellers was a charter member of the Institute of Food Technologists (IFT), serving in the role of Secretary-Treasurer from 1947 to 1949 before Charles S. Lawrence took over the Executive Secretary position and moved the secretary role from Amherst, Massachusetts to its current location in Chicago, Illinois.
Fellers served as chairman of the American Chemical Society's Agricultural and Food Chemistry Division Archived 2009-08-15 at the Wayback Machine during the late 1930s and early 1940s.
He also was a very competitive badminton player as noted by Roy E. Morse, a graduate student at the University of Massachusetts Amherst would later be elected to IFT President in 1987 - 1988.