US PATENT SUBCLASS 162 / 129
.~.~.~ Fiber

Current as of: June, 1999
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162 /   HD   PAPER MAKING AND FIBER LIBERATION

100  DF  PROCESSES AND PRODUCTS {31}
123  DF  .~ Multi-layer waterlaid webs or sheets {3}
125  DF  .~.~ Layers of different properties {4}
129.~.~.~ Fiber {2}
130  DF  .~.~.~.~> Dimension
131  DF  .~.~.~.~> Orientation

DEFINITION

Classification: 162/129

(under subclass 125) Processes in which the fibers of at

least two layers differ in some property, and the corresponding products.

(1) Note. The making of a composite product by joining a cellulosic web and an asbestos or animal fiber web is included in this subclass.