IP Library › Granted Patent US 6,491,477
Granted Patent Utility Small
US 6,491,477 · Confirmation No. 1328

SELF-ELEVATING DRILLING UNIT

Patented Case View Patent ↗ View Publication ↗
⬇ PDF
 Code Description Pages PDF
2008-12-10 PET.OP Petition for review by the Office of Petitions 5 View
2008-12-10 N417 Electronic Filing System Acknowledgment Receipt 2 View
2008-05-06 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2008-05-06 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2008-04-25 PA.. Power of Attorney 1 View
2008-04-25 N417 Electronic Filing System Acknowledgment Receipt 2 View
2001-04-27 TRNA Transmittal of New Application 2 View
2001-04-27 SPEC Specification 14 View
2001-04-27 CLM Claims 6 View
2001-04-27 ABST Abstract 1 View
2001-04-27 DRW Drawings-only black and white line drawings 8 View
2001-04-27 OATH Oath or Declaration filed 2 View
2001-04-27 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 6,491,477
App. No.
09/844,387
Filed
2001-04-27
Granted
2002-12-10
Pub. No.
US20020159840A1
Art Unit
3671
PTA
-78 days