US PATENT SUBCLASS 348 / 12
.~ Two-way

Current as of: June, 1999
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348 /   HD   TELEVISION

6  DF  WIRED BROADCAST (E.G., CABLE) {5}
12.~ Two-way

DEFINITION

Classification: 348/12

Two-way:

(under subclass 6) Subject matter including means for establishing communication to and from the receiving site.