Granted Patent
Utility
US 5,146,829 · App. 07/658,819
Straight cut coater unwind knife
Inventor:
Michael J. Wadzinski
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Feb 22, 1991
Inventor
Michael J. Wadzinski
Assignee (at issue)
Appleton Papers 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.