Granted Patent
Utility
US 5,422,813 · App. 08/115,087
No-outage GPS/commercial RF positioning system
Inventors:
Leonard Schuchman, Aaron Weinberg, Lloyd Engelbrecht
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Sep 2, 1993
Inventors
Leonard Schuchman
Aaron Weinberg
Lloyd Engelbrecht
Assignee (at issue)
Stanford Telecommunications, 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.