Granted Patent
Utility
US 5,954,885 · App. 08/860,507
Cleaning method
Inventor:
Tadahiro Ohmi
Patented Case
View Patent ↗
Granted: Sep 21, 1999
Filed: Jul 25, 1997
Inventor
Tadahiro Ohmi
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.