Granted Patent
Utility
US 4,991,673 · App. 07/315,227
Cross-country vehicle or machine
Inventor:
Jan Ericsson
Patented Case
View Patent ↗
Granted: Feb 12, 1991
Filed: Feb 24, 1989
Inventor
Jan Ericsson
Assignee (at issue)
Umea Mekaniska AB
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.