Granted Patent
Utility
US 5,067,740 · App. 07/629,050
Stretch trailer mixer
Inventor:
Ronald E. Christenson
Patented Case
View Patent ↗
Granted: Nov 26, 1991
Filed: Dec 14, 1990
Inventor
Ronald E. Christenson
Assignee (at issue)
McNeilus Truck and Manufacturing, 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.