Granted Patent
Utility
US 5,345,702 · App. 07/928,279
Removable pipe arch for dragline buckets
Inventor:
James T. Hughes
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Aug 11, 1992
Inventor
James T. Hughes
Assignee (at issue)
Indresco 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.