Granted Patent
Utility
US 6,564,564 · App. 10/015,971
Purge
Inventors:
Richard M. Heiden, Robert Roth, Brian T. Sullivan, Steven E. Wolfgram
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Oct 22, 2001
Inventors
Richard M. Heiden
Robert Roth
Brian T. Sullivan
Steven E. Wolfgram
Assignee (at issue)
American Standard 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.