Granted Patent
Utility
US 5,347,546 · App. 07/874,795
Method and apparatus for prefiltering a global positioning system receiver
Inventors:
Kamran K. Abadi, Steven C. Evans
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Apr 28, 1992
Inventors
Kamran K. Abadi
Steven C. Evans
Assignee (at issue)
Ashtech, 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.