Granted Patent
Utility
US 6,131,754 · App. 09/212,323
Synthetic two-piece induction seal
Inventor:
Joseph Smelko
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Dec 15, 1998
Inventor
Joseph Smelko
Assignee (at issue)
ILLINOIS TOOL WORKS 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.