Granted Patent
Utility
US 5,135,271 · App. 07/715,436
Latching apparatus for access covers on bulk storage structures
Inventor:
Ronald Bestwick
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Jun 14, 1991
Inventor
Ronald Bestwick
Assignee (at issue)
Grain Systems, 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.