Granted Patent
Utility
US 6,401,287 · App. 09/442,937
System for cleaning a web substrate
Inventors:
Frank C. Corrado, James W. Fischer, Gary R. Larsen, Ronald W. Sweet
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Nov 18, 1999
Inventors
Frank C. Corrado
James W. Fischer
Gary R. Larsen
Ronald W. Sweet
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.