Granted Patent
Utility
US 6,427,693 · App. 09/563,439
Face mask structure
Inventors:
Cindy Janja Blackstock, Fred Hart, Lupe Santoy
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: May 1, 2000
Inventors
Cindy Janja Blackstock
Fred Hart
Lupe Santoy
Assignee (at issue)
Kimberly-Clark Worldwide, 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.