Granted Patent
Utility
US 4,506,816 · App. 06/541,689
Serrated cutting edge for sheet material dispenser and method of forming the same
Inventor:
Harry I. Roccaforte
Patented Case
View Patent ↗
Granted: Mar 26, 1985
Filed: Oct 13, 1983
Inventor
Harry I. Roccaforte
Assignee (at issue)
Champion International Corporation Limited
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.