Granted Patent
Utility
US 5,752,288 · App. 08/761,239
Soot blower assembly
Inventors:
Gregory A. Parkin, Ronald M. Gray
Patented Case
View Patent ↗
Granted: May 19, 1998
Filed: Dec 6, 1996
Inventors
Gregory A. Parkin
Ronald M. Gray
Assignee (at issue)
Copes-Vulcan, 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.