Granted Patent
Utility
US 5,657,026 · App. 08/592,809
Beacon signal receiving system
Inventors:
Jerry W. Culpepper, John D. Markus, Lawrence M. Smith, Zhaoliang Chen
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Jan 26, 1996
Inventors
Jerry W. Culpepper
John D. Markus
Lawrence M. Smith
Zhaoliang Chen
Assignee (at issue)
Electronic Tracking Systems, 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.