US Patent 3,446,251, granted May 27, 1969 to Norris Fitz Dow (assignor to General Electric), describing triaxial woven fabrics made of three sets of yarn courses crossing at about 60 degrees. The text explains how interlocking intersections prevent slippage and give nearly isotropic strength, including bias strength. Fifteen figures show variants differing in porosity, density, paired or floating yarns, twill-like and long-float arrangements. The patent closes with 23 claims and a list of references cited. Seven drawing sheets precede the specification.