Granted Patent
Utility
US 5,675,863 · App. 08/520,369
Full coverage sootblower
Inventors:
W. Wayne Holden, Michael Holden
Patented Case
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Granted: Oct 14, 1997
Filed: Aug 28, 1995
Inventors
W. Wayne Holden
Michael Holden
Assignee (at issue)
Combustion Engineering, 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.