Granted Patent
Utility
US 4,284,203 · App. 06/093,748
Storage bin closure with liquid seal
Inventor:
Erbie G. Mize
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Nov 13, 1979
Inventor
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.