IP Library › Granted Patent US 6,639,490
Granted Patent Utility
US 6,639,490 · Confirmation No. 2521

NINETY DEGREE COUPLER FOR RADIO FREQUENCY DEGRADED CIRCUITS

Inventor: Paul P. Chominski
Patented Case View Patent ↗ View Publication ↗
⬇ PDF
 Code Description Pages PDF
2003-08-21 IFEE Issue Fee Payment (PTO-85B) 1 View
2003-08-21 C.AD Change of Address 1 View
2003-08-21 LET. Miscellaneous Incoming Letter 2 View
2003-08-21 LET. Miscellaneous Incoming Letter 3 View
2003-08-21 DRW Drawings-only black and white line drawings 7 View
2001-10-31 TRNA Transmittal of New Application 2 View
2001-10-31 SPEC Specification 7 View
2001-10-31 CLM Claims 2 View
2001-10-31 ABST Abstract 1 View
2001-10-31 DRW Drawings-only black and white line drawings 7 View
2001-10-31 OATH Oath or Declaration filed 3 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 6,639,490
App. No.
10/002,430
Filed
2001-10-31
Granted
2003-10-28
Pub. No.
US20030080827A1
Art Unit
2817
PTA
-2 days