Granted Patent
Utility
US 4,750,772 · App. 06/777,070
Aerodynamic structure for semi-trailer trucks
Inventor:
Fritz W. Haegert
Patented Case
View Patent ↗
Granted: Jun 14, 1988
Filed: Sep 17, 1985
Inventor
Fritz W. Haegert
Assignee (at issue)
Navistar International Transportation
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.