Granted Patent
Utility
US 5,375,446 · App. 08/143,785
Rotary expanded grid cutter and related process
Inventor:
Edward R. Hein
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Nov 1, 1993
Inventor
Edward R. Hein
Assignee (at issue)
Exide Corporation
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.