Granted Patent
Utility
US 5,725,234 · App. 08/547,387
Ball-type coupler for trailers and the like
Inventor:
Floyd A. Colibert
Patented Case
View Patent ↗
Granted: Mar 10, 1998
Filed: Oct 24, 1995
Inventor
Floyd A. Colibert
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.