Granted Patent
Utility
US 4,372,053 · App. 06/209,140
Dryer for particulate material
Inventors:
Robert J. Anderson, Glenn E. Hall
Patented Case
View Patent ↗
Granted: Feb 8, 1983
Filed: Nov 21, 1980
Inventors
Robert J. Anderson
Glenn E. Hall
Assignee (at issue)
The Andersons 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.