Granted Patent
Utility
US 5,908,556 · App. 08/876,288
Automatic ionic cleanliness tester
Inventors:
David A Cavotta, Michael C. Huggins, Kristine R Bewley
Patented Case
View Patent ↗
Granted: Jun 1, 1999
Filed: Jun 16, 1997
Inventors
David A Cavotta
Michael C. Huggins
Kristine R Bewley
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.