Granted Patent
Utility
US 4,307,545 · App. 06/168,455
Cylindrical grinding machine
Inventor:
William E. Shank
Patented Case
View Patent ↗
Granted: Dec 29, 1981
Filed: Jul 10, 1980
Inventor
William E. Shank
Assignee (at issue)
Litton Industrial Products, 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.