IP Library › Granted Patent US 6,499,239
Granted Patent Utility PCT National Stage
US 6,499,239 · Confirmation No. 2779

METHOD FOX EXTRACTING AND GRADING SAND

Patented Case View Patent ↗
⬇ PDF
 Code Description Pages PDF
2001-01-26 LET. Miscellaneous Incoming Letter 15 View
2001-01-26 LET. Miscellaneous Incoming Letter 15 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 6,499,239
App. No.
09/554,551
Filed
2001-01-26
Granted
2002-12-31
Art Unit
3671
PTA
0 days