Granted Patent
Utility
US 6,531,982 · App. 08/940,051
Field unit for use in a GPS system
Inventors:
Stanley A. White, Kenneth S. Walley, James W. Johnston, P. Michael Henderson, Kelly H. Hale, Warner B. Andrews, Jr., Jonathan I. Siann
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Sep 30, 1997
Inventors
Stanley A. White
Kenneth S. Walley
James W. Johnston
P. Michael Henderson
Kelly H. Hale
Warner B. Andrews, Jr.
Jonathan I. Siann
Assignee (at issue)
SIRF Technology, 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.