Granted Patent
Utility
US 6,432,214 · App. 09/113,440
Cleaning apparatus
Inventors:
Charles James Bryer, Daniel P. Bexten, Jerry Norby
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Jul 10, 1998
Inventors
Charles James Bryer
Daniel P. Bexten
Jerry Norby
Assignee (at issue)
Semitool, 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.