Granted Patent
Utility
US 6,722,187 · App. 09/884,496
Enhanced vacuum decay diagnostic and integration with purge function
Inventors:
Malcolm James Grieve, Stephen F. Majkowski, Kenneth M. Simpson, Michael J. Steckler, Carelton Williams
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Jun 18, 2001
Inventors
Malcolm James Grieve
Stephen F. Majkowski
Kenneth M. Simpson
Michael J. Steckler
Carelton Williams
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.