Granted Patent
Utility
US 6,726,220 · App. 10/145,395
Dual seal assembly
Inventors:
Michael P. Grimanis, Mark W. Stremeckus
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: May 14, 2002
Inventors
Michael P. Grimanis
Mark W. Stremeckus
Assignee (at issue)
A.W. CHESTERTON COMPANY
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.