IP Library › Granted Patent US 6,639,912
Granted Patent Utility
US 6,639,912 · Confirmation No. 3831

NUMBER PORTABILITY IN A COMMUNICATIONS SYSTEM

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2003-08-11 IFEE Issue Fee Payment (PTO-85B) 1 View
2002-02-15 TRNA Transmittal of New Application 4 View
2002-02-15 SPEC Specification 26 View
2002-02-15 CLM Claims 3 View
2002-02-15 ABST Abstract 1 View
2002-02-15 DRW Drawings-only black and white line drawings 13 View
2002-02-15 OATH Oath or Declaration filed 10 View
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Quick Facts
Patent No.
US 6,639,912
App. No.
10/077,544
Filed
2002-02-15
Granted
2003-10-28
Examiner
PATEL, AJIT
Art Unit
2664
PTA
-68 days