Granted Patent
Utility
US 6,588,049 · App. 09/775,023
Cleaning installation and device for removing soot or similar deposits
Inventor:
Knud Sundgaard
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Feb 1, 2001
Inventor
Knud Sundgaard
Assignee (at issue)
OKR Cleaning
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.