Granted Patent
Utility
US 5,716,261 · App. 08/701,007
Oscillating blast cleaner
Inventor:
Robert B. Watkin
Patented Case
View Patent ↗
Granted: Feb 10, 1998
Filed: Aug 21, 1996
Inventor
Robert B. Watkin
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.