IPC Definitions - January 01, 2012
D04H 3/033 - Definition
This group covers:
Non-woven fabrics to which the means for changing the orientation of yarns or like filamentary material are given after the formation of yarns or like filamentary material, and which are also included in the scope of the upper group, namely, formed wholly or mainly of yarns or like filamentary material of substantial length.