Granted Patent
Utility
US 6,403,916 · App. 09/569,536
System and automated method for producing welded end closures in thin-walled metal tubes
Inventors:
Scott Spooner, T. L. Thompson, Michael L. Vinson
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: May 12, 2000
Inventors
Scott Spooner
T. L. Thompson
Michael L. Vinson
Assignee (at issue)
Isostar International, 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.