Granted Patent
Utility
US 4,593,265 · App. 06/539,137
Portable traffic control apparatus
Inventor:
John D. McKenney
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Oct 5, 1983
Inventor
John D. McKenney
Assignee (at issue)
Lear Siegler, Inc.
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.