Granted Patent
Utility
US 5,855,653 · App. 08/892,346
Induced voltage electrode filter system with disposable cartridge
Inventor:
Yujiro Yamamoto
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: Jul 14, 1997
Inventor
Yujiro Yamamoto
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.