Granted Patent
Utility
US 5,533,828 · App. 08/389,257
Method and apparatus for discharging paving materials on top of distributing auger
Inventor:
Thomas R. Campbell
Patented Case
View Patent ↗
Granted: Jul 9, 1996
Filed: Feb 16, 1995
Inventor
Thomas R. Campbell
Assignee (at issue)
Astec Industries, 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.