Granted Patent
Utility
US 6,375,211 · App. 09/583,473
Trailer hitch with surge braking/dampening apparatus
Inventor:
Charles J. MacKarvich
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: May 31, 2000
Inventor
Charles J. MacKarvich
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.