Granted Patent
Utility
US 6,033,166 · App. 09/140,927
Rail milling machine
Inventor:
Barry Francis Hampel
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: Aug 27, 1998
Inventor
Barry Francis Hampel
Assignee (at issue)
Koppers Industries, 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.