IP Library Patent Application 09887453
Patent Application Utility
App. No. 09/887,453 · Confirmation No. 6951

HEAT EXCHANGE ASSEMBLY

Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗ View Publication ↗
⬇ PDF
Code Description Pages PDF
2001-09-04 TRNA Transmittal of New Application 3 View
2001-09-04 DRW Drawings-only black and white line drawings 16 View
2001-06-22 TRNA Transmittal of New Application 2 View
2001-06-22 SPEC Specification 32 View
2001-06-22 CLM Claims 7 View
2001-06-22 ABST Abstract 1 View
2001-06-22 DRW Drawings-only black and white line drawings 16 View
2001-06-22 OATH Oath or Declaration filed 4 View
2001-06-22 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
App. No.
09/887,453
Filed
2001-06-22
Granted
2003-05-27
Pub. No.
US20020023740A1
Art Unit
3743
PTA
-69 days