Granted Patent
Utility
US 6,474,535 · App. 09/601,962
Welding method and apparatus
Inventors:
Charles E. Shanks, Kevin Helle, John Krewer, Robert Hallgren
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Oct 6, 2000
Inventors
Charles E. Shanks
Kevin Helle
John Krewer
Robert Hallgren
Assignee (at issue)
NYCOMED IMAGING AS
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.