IP Library › Granted Patent US 6,724,380
Granted Patent Utility
US 6,724,380 · Confirmation No. 7706

CONTRAST CONTROL CIRCUIT FOR DISPLAY APPARATUS

Inventor: Choong-ho Lee
Patented Case View Patent ↗ View Publication ↗
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 Code Description Pages PDF
2004-01-06 IFEE Issue Fee Payment (PTO-85B) 1 View
2001-04-27 TRNA Transmittal of New Application 2 View
2001-04-27 ADS Application Data Sheet 1 View
2001-04-27 A.PE Preliminary Amendment 14 View
2001-04-27 SPEC Specification 6 View
2001-04-27 CLM Claims 2 View
2001-04-27 ABST Abstract 1 View
2001-04-27 DRW Drawings-only black and white line drawings 4 View
2001-04-27 OATH Oath or Declaration filed 4 View
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Quick Facts
Patent No.
US 6,724,380
App. No.
09/842,664
Filed
2001-04-27
Granted
2004-04-20
Pub. No.
US20010035864A1
Art Unit
2673
PTA
-44 days