Granted Patent
Utility
US 6,820,749 · App. 10/350,426
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: Nov 23, 2004
Filed: Jan 24, 2003
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.