Granted Patent
Utility
US 6,581,549 · App. 09/944,924
Sootblower lance port with leak resistant cardon joint
Inventors:
Michael Stewart, Jeffrey A. Atchley
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Aug 31, 2001
Inventors
Michael Stewart
Jeffrey A. Atchley
Assignee (at issue)
CLYDE BERGEMANN, 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.