Granted Patent
Utility
US 5,664,549 · App. 08/591,311
Breather system for an internal combustion engine
Inventor:
William Hutchins
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Jan 25, 1996
Inventor
William Hutchins
Assignee (at issue)
Rover Group Limited
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.