Granted Patent
Utility
US 5,357,919 · App. 08/090,130
Hydrocarbon emission control
Inventor:
Thomas T. Ma
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Jul 14, 1993
Inventor
Thomas T. Ma
Assignee (at issue)
Ford Motor 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.