US PATENT SUBCLASS 455 / 432
.~.~ Roaming

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

403  DF  RADIOTELEPHONE SYSTEM {12}
422  DF  .~ Zoned or cellular telephone system {14}
432.~.~ Roaming {1}
433  DF  .~.~.~> Home location registration (HLR) or visitor location registration (VLR) detail

DEFINITION

Classification: 455/432

Roaming:

(under subclass 422) Subject matter wherein a mobile station operates in a cellular system other than the system where the mobile station is subscribed.