Granted Patent
Utility
US 6,453,159 · App. 09/257,732
Multi-level encryption system for wireless network
Inventor:
Daniel E. Lewis
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Feb 25, 1999
Inventor
Daniel E. Lewis
Assignee (at issue)
TELXON CORPORATION
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.