Granted Patent
Utility
US 5,201,469 · App. 07/675,965
Comminuting mill
Inventor:
Joe R. Urschel
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Mar 27, 1991
Inventor
Joe R. Urschel
Assignee (at issue)
Urschel Laboratories, 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.