Granted Patent
Utility
US 5,556,043 · App. 08/383,918
Angled-rib blocking slab for pulpwood grinder
Inventor:
James H. Bittinger, Jr.
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Feb 6, 1995
Inventor
James H. Bittinger, Jr.
Assignee (at issue)
Lake Superior Paper Industries
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.