Granted Patent
Utility
US 5,590,467 · App. 08/323,635
Method of making a blast wheel
Inventor:
George Schloetzer
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: Oct 17, 1994
Inventor
George Schloetzer
Assignee (at issue)
Wheelabrator Group Limited
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.