Granted Patent
Utility
US 6,128,934 · App. 09/334,348
Stretch reduction mill
Inventor:
David HOUGHTON
Patented Case
View Patent ↗
Granted: Oct 10, 2000
Filed: Jun 16, 1999
Inventor
David HOUGHTON
Assignee (at issue)
Lone Star Technologies, 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.