Granted Patent
Utility
US 6,347,546 · App. 09/307,822
Method of non-destructive testing an evacuated package for a leak
Inventor:
Martin Christopher Rule
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: May 7, 1999
Inventor
Martin Christopher Rule
Assignee (at issue)
KRAFT FOODS HOLDINGS, 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.