Spinning or twisting machines in which the product is wound-up continuously

Official title: Spinning or twisting machines in which the product is wound-up continuously (open-end spinning machines D01H4/00 {; doubling of yarns B65H54/00+T; doubled, plied or cabled threads D02G3/28, e.g. using hollow spindles D02G3/283; spin-twisting D02G3/281; threads with alternately "S" and "Z" direction of twist, e.g. self-twist process, D02G3/286; wrapping strands of filaments or staple fibres by a binder yarn D02G3/38})

D01H1/00 (Spinning or twisting machines in which the product is wound-up continuously) appears on 842 US grants and 345 published applications in this corpus.