Granted Patent
Utility
US 4,455,922 · App. 06/431,516
Unloading auger control system
Inventors:
John E. Brelsford, Emmett F. Glass
Patented Case
View Patent ↗
Granted: Jun 26, 1984
Filed: Sep 30, 1982
Inventors
John E. Brelsford
Emmett F. Glass
Assignee (at issue)
Sperry Corp.
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.