IP Library › Granted Patent US 6,538,520
Granted Patent Utility
US 6,538,520 · Confirmation No. 7523

METHODS AND APPARATUS FOR PRODUCING A REFERENCE FREQUENCY SIGNAL WITH USE OF A REFERENCE FREQUENCY QUADRUPLER HAVING FREQUENCY SELECTION CONTROLS

Patented Case View Patent ↗
⬇ PDF
 Code Description Pages PDF
2001-10-18 TRNA Transmittal of New Application 3 View
2001-10-18 TRNA Transmittal of New Application 1 View
2001-10-18 SPEC Specification 3 View
2001-10-18 SPEC Specification 3 View
2001-10-18 SPEC Specification 2 View
2001-10-18 CLM Claims 3 View
2001-10-18 CLM Claims 2 View
2001-10-18 ABST Abstract 1 View
2001-10-18 DRW Drawings-only black and white line drawings 3 View
2001-10-18 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 6,538,520
App. No.
09/982,156
Filed
2001-10-18
Granted
2003-03-25
Examiner
MIS, DAVID C
Art Unit
2817
PTA
-93 days