Granted Patent
Utility
US 5,423,715 · App. 08/031,813
Bolt-together blast wheel
Inventor:
George Schloetzer
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Mar 15, 1993
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.