US PATENT SUBCLASS 370 / 408
.~.~.~ Nodes interconnected in hierarchy to form a tree

Current as of: June, 1999
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370 /   HD   MULTIPLEX COMMUNICATIONS

351  DF  PATHFINDING OR ROUTING {5}
389  DF  .~ Switching a message which includes an address header {11}
400  DF  .~.~ Having a plurality of nodes performing distributed switching {6}
408.~.~.~ Nodes interconnected in hierarchy to form a tree

DEFINITION

Classification: 370/408

Nodes interconnected in a hierarchy to form a tree:

(under subclass 400) Subject matter having a plurality of nodes wherein one of the nodes is a root node and other nodes are connected to the root node by branches.