Granted Patent
Utility
US 6,378,249 · App. 09/592,158
Lid lifting mechanism
Inventors:
George T. Foss, Frank E. Heywood, William M. Maser
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Jun 12, 2000
Inventors
George T. Foss
Frank E. Heywood
William M. Maser
Assignee (at issue)
3L Filters Ltd.
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.