Granted Patent
Utility
US 6,159,137 · App. 09/262,720
Apparatus for folding sheet material having improved slitting, scoring/crushing, gathering, and folding sections or devices
Inventors:
Stanley M. Lee, Ken N. Winebarger
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Mar 4, 1999
Inventors
Stanley M. Lee
Ken N. Winebarger
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.