Granted Patent
Utility
US 6,540,089 · App. 09/836,394
Large, stationary, modular aggregate processing plant and method of manufacturing and installing same
Inventors:
J. Don Brock, William R. Gray
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Apr 17, 2001
Inventors
J. Don Brock
William R. Gray
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.