IP Library › Patent Application 10019857
Patent Application Utility PCT National Stage Small
App. No. 10/019,857 · Confirmation No. 1849

MULTI-LAYER RECIRCULATING FILTER WASTEWATER TREATMENT APPARATUS

Inventor: Kevin R. Chaffee
Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗
⬇ PDF
Code Description Pages PDF
2009-09-10 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2009-09-10 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2009-09-03 PA.. Power of Attorney 1 View
2009-09-03 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2009-09-03 N417 Electronic Filing System Acknowledgment Receipt 2 View
2009-09-03 PA.. Power of Attorney 1 View
2009-09-03 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2009-09-03 N417 Electronic Filing System Acknowledgment Receipt 2 View
2003-07-11 IFEE Issue Fee Payment (PTO-85B) 1 View
2001-11-09 ABST Abstract 1 View
2001-11-09 LET. Miscellaneous Incoming Letter 36 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
App. No.
10/019,857
Filed
2001-11-09
Granted
2003-09-09
Art Unit
1723
PTA
0 days