US PATENT SUBCLASS 57 / 31
.~ Web material

Current as of: June, 1999
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57 /   HD   TEXTILES: SPINNING, TWISTING, AND TWINING

1 R  DF  APPARATUS AND PROCESSES {45}
31.~ Web material {1}
32  DF  .~.~> With coating or impregnating

DEFINITION

Classification: 57/31

Devices for twisting paper or paper-like material, such as synthetic tape, asbestos paper, etc., in ribbon form with or without the addition of fibrous material to form yarns or cords therefrom.