Granted Patent
Utility
US 6,408,664 · App. 09/630,496
Hydraulic positioning assembly for cold rolling tubes
Inventor:
James O. Williams
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Aug 2, 2000
Inventor
James O. Williams
Assignee (at issue)
Anvil International, LLC
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.