Granted Patent
Utility
US 4,211,490 · App. 06/005,339
Drum mix asphalt plant with fiber filter dust collector
Inventors:
James D. Brock, Erbie G. Mize
Patented Case
View Patent ↗
Granted: Jul 8, 1980
Filed: Jan 22, 1979
Inventors
James D. Brock
Erbie G. Mize
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.