Granted Patent
Utility
US 4,556,233 · App. 06/555,519
Trailer coupler
Inventors:
Karl E. Richter, Edward Ebey
Patented Case
View Patent ↗
Granted: Dec 3, 1985
Filed: Nov 28, 1983
Inventors
Karl E. Richter
Edward Ebey
Assignee (at issue)
Fulton Manufacturing Corporation
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.