IP Library Granted Patent US 6,443,425
Granted Patent Utility
US 6,443,425 · Confirmation No. 2249

VALVE

⬇ PDF
Code Description Pages PDF
2006-06-05 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2001-04-20 TRNA Transmittal of New Application 1 View
2001-04-20 SPEC Specification 7 View
2001-04-20 CLM Claims 4 View
2001-04-20 ABST Abstract 1 View
2001-04-20 DRW Drawings-only black and white line drawings 3 View
2001-04-20 OATH Oath or Declaration filed 1 View
2001-04-20 LET. Miscellaneous Incoming Letter 1 View
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this application's details
Quick Facts
Patent No.
US 6,443,425
App. No.
09/839,916
Filed
2001-04-20
Granted
2002-09-03
Pub. No.
US20020020826A1
Art Unit
3754
PTA
-21 days