Granted Patent
Utility
US 6,144,840 · App. 09/059,115
Wireless telephone ring detection method for extended battery life
Inventors:
Ken Alton, Steven E. Hebeler
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Apr 13, 1998
Inventors
Ken Alton
Steven E. Hebeler
Assignee (at issue)
Advanced Micro Devices, 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.