IP Library › Patent Application 09844254
Patent Application Utility
App. No. 09/844,254 · Confirmation No. 8929

PROCESS AND APPARATUS FOR HEAT EXCHANGE

Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗ View Publication ↗
⬇ PDF
 Code Description Pages PDF
2001-04-30 TRNA Transmittal of New Application 1 View
2001-04-30 A.PE Preliminary Amendment 5 View
2001-04-30 SPEC Specification 15 View
2001-04-30 CLM Claims 3 View
2001-04-30 DRW Drawings-only black and white line drawings 7 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.
09/844,254
Filed
2001-04-30
Granted
2003-10-07
Pub. No.
US20020124596A1
Art Unit
3744
PTA
-6 days