Granted Patent
Utility
US 6,270,211 · App. 09/348,764
Bubble elimination and filter tower structure
Inventors:
Gregory Alan Long, James Harold Powers, Matthew Russell, David A. Ward
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Jul 7, 1999
Inventors
Gregory Alan Long
James Harold Powers
Matthew Russell
David A. Ward
Assignee (at issue)
Lexmark International, 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.