Granted Patent
Utility
US 5,044,841 · App. 07/556,648
Valve seat bushing machining apparatus
Inventors:
Leonard W. Biera, William F. Crawford, John Kobane, Jr., Jack R. Settimo
Patented Case
View Patent ↗
Granted: Sep 3, 1991
Filed: Jul 20, 1990
Inventors
Leonard W. Biera
William F. Crawford
John Kobane, Jr.
Jack R. Settimo
Assignee (at issue)
Litton Industrial Automation Systems, 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.