Granted Patent
Utility
US 5,754,451 · App. 08/608,866
Preventative maintenance and diagonstic system
Inventor:
Chet R. Williams
Patented Case
View Patent ↗
Granted: May 19, 1998
Filed: Feb 29, 1996
Inventor
Chet R. Williams
Assignee (at issue)
Raytheon Company
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.