IP Library › Granted Patent US 6,347,140
Granted Patent Utility
US 6,347,140 · App. 09/373,040

Echo canceling method and apparatus

Inventors: Mansour Tahernezhaadi, Michael J. Kirk
Patented Case View Patent ↗
Granted: Feb 12, 2002 Filed: Aug 12, 1999
Inventors
Mansour Tahernezhaadi
Michael J. Kirk
Assignee (at issue)
Motorola, Inc.

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

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 patent's details
Quick Facts
Patent No.
US 6,347,140
App. No.
09/373,040
Filed
1999-08-12
Granted
2002-02-12
Kind
B1