1. Spandex Elastic Fibers
2. (to DuPont Co.) Elastic Filaments of Linear Segmented Polymers, U.S. Pat. 2,929,804 (March 22, 1960).
3. (to DuPont Co.) Stabilization of Elastomers Containing Ureylene Groups, U.S. Pat. 2,999,839 (September 12, 1961).
4. POLYURETHANE AORTAS IN DOGS. THREE-YEAR RESULTS