Granted Patent
Utility
US 6,571,158 · App. 10/155,212
Maintenance tracking system
Inventor:
Barry Sinex
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: May 24, 2002
Inventor
Barry Sinex
Assignee (at issue)
Sinex Holding LLC
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.