Granted Patent
Utility
US 6,179,952 · App. 09/156,672
Pressure sealer three tiered sealing roll configuration
Inventor:
Lee T. Spranger
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Sep 18, 1998
Inventor
Lee T. Spranger
Assignee (at issue)
Moore U.S.A., 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.