Granted Patent
Utility
US 6,198,105 · App. 09/528,472
Miniature ionization gauge utilizing multiple ion collectors
Inventor:
Daniel G. Bills
Patented Case
View Patent ↗
Granted: Mar 6, 2001
Filed: Mar 17, 2000
Inventor
Daniel G. Bills
Assignee (at issue)
Helix Technology 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.