Granted Patent
Utility
US 6,442,839 · App. 09/660,752
Shaving system
Inventors:
Mingchih M. Tseng, Michael J. Kwiecien
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Sep 13, 2000
Inventors
Mingchih M. Tseng
Michael J. Kwiecien
Assignee (at issue)
The Gillette Company LLC
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.