Granted Patent
Utility
US 5,807,162 · App. 08/675,577
Grinding apparatus, and process for the operation thereof
Inventor:
Alden P. Dana
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Jul 3, 1996
Inventor
Alden P. Dana
Assignee (at issue)
Blanchard Windsor Corp.
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.