Granted Patent
Utility
US 4,530,308 · App. 06/529,846
Level control for trough filling apparatus
Inventors:
Keith Sheets, Devon Eby
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Sep 6, 1983
Inventors
Keith Sheets
Devon Eby
Assignee (at issue)
Chore-Time Equipment, 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.