Granted Patent
Utility
US 5,604,768 · App. 08/361,799
Frequency synchronized bidirectional radio system
Inventor:
Forrest F. Fulton
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Dec 21, 1994
Inventor
Forrest F. Fulton
Assignee (at issue)
Cellnet Data 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.